Some standard content:
ICS 03.100.30
Agricultural Industry Standard of the People's Republic of China
NY/T1548--2007
Agricultural Technology Extensionist
(Aquatic Products)
Published on 2007-12-18
Implemented on 2008-03-01
Ministry of Agriculture of the People's Republic of China
This standard is proposed and managed by the Personnel and Labor Department of the Ministry of Agriculture: Drafting Unit of this standard: Vocational Skills Certification Guidance Station of the Fishery Industry of the Ministry of Agriculture. The main contributors of this standard: Xia Lixin, Liu Shujin, Xiao Youhong, Zhao Houjun. NY/T1548—2007
1 Scope
Agricultural Technology Extensionist (Aquatic Products)
NY/T 1548—2007
This standard specifies the terms and definitions, basic requirements and work requirements of the occupation of agricultural technology extensionist (aquatic products). This standard is applicable to the professional skills assessment of aquatic technology extension personnel. 2 Terms and Definitions
The following terms and definitions apply to this standard! 2. 1
Agricultural Technology Extensionist (Aquatic Products)
Personnel engaged in the promotion of aquatic technology and related services 3 Occupational Overview
3.1 Occupational Level
This occupation has four levels, namely: Agricultural Technology Extensionist (Aquatic Products) Level 4 (National Occupational Qualification Level 4), Agricultural Technology Extensionist (Aquatic Products) Level 3 (National Occupational Qualification Level 3), Agricultural Technology Extensionist (Aquatic Products) Level 2 (National Occupational Qualification Level 2), Agricultural Technology Extensionist (Aquatic Products) Level 1 (National Occupational Qualification Level 1) 3.2 Occupational Environment
Indoor and outdoor:
3.3 Occupational Ability Characteristics
Master certain aquatic professional and extension knowledge, and have certain learning, analysis, judgment, innovation, expression, organization, coordination and management capabilities. 3.4 Basic Education Level
Personnel who have obtained a diploma from a secondary vocational school with a nationally recognized academic degree in aquatic products or related majors. 3.5 Training requirements
3.5.1 Training period
For full-time vocational school education, the general training period is determined according to its training objectives and teaching plans: Level 4 is not less than 120 standard hours; Level 3 and Level 2 are not less than 100 standard hours, and Level 1 is not less than 80 standard hours. 3.5.2 Training teachers
Teachers training Level 4 and Level 3 agricultural technology extension workers (aquatic products) must have a professional qualification certificate of the first level or above in the profession or a professional and technical position qualification of intermediate or above in the relevant major; teachers training Level 2 agricultural technology extension workers (aquatic products) must have a first-level professional qualification certificate of the profession or a professional and technical position qualification of associate senior or above in the relevant major; teachers training Level 1 agricultural technology extension workers (aquatic products) must have a first-level professional qualification certificate of the profession for more than 2 years or a professional and technical position qualification of senior in the relevant major; teachers at all levels should have relevant teaching and training experience.
3.5.3 Training venues and equipment
Standard classrooms, laboratories and teaching test bases that meet teaching needs, as well as corresponding instruments and equipment and related teaching aids. 3.6 Approval requirements
3.6.1 Applicable objects
Persons engaged in or recommended to engage in this profession: 3.6.2 Application conditions
NY/T1548-2007
3.6.2.1 Agricultural Technology Extensionist (Aquatic Products) Level 4 (one of the following conditions) 1) Obtained a diploma in aquatic products or related majors from a secondary vocational school or above recognized by the state, completed the standard number of hours of formal training for this occupation at Level 4, and obtained a completion certificate 2) After obtaining a primary certificate of vocational qualification related to aquatic products: Continuously engaged in this occupation for 2 years or more, completed the prescribed number of hours of formal training for this occupation at Level 4, and obtained a completion certificate 3) Continuously engaged in this occupation for more than 3 years, completed the standard number of hours of formal training for this occupation at Level 4, and obtained a completion certificate. 3.6.2. 2 Agricultural Technology Extension Worker (Aquaculture) Level 3 (one of the following conditions is met) 1) Obtained a bachelor's degree certificate in this major or related major and continuously engaged in this occupation for more than 1 year: or obtained a diploma in this major from a college, vocational and technical college or a corresponding school and continuously engaged in this occupation for more than 2 years, and completed the required hours of training for this occupation at level 3 and obtained a completion certificate. 2) After obtaining the level 4 professional qualification certificate for this occupation, continuously engaged in this occupation for more than 2 years, completed the required hours of training for this occupation at level 3 and obtained a completion certificate.
3) After obtaining the relevant level 4 professional certificate: continuously engaged in this occupation for more than 3 years, completed the required hours of training for this occupation at level 3 and obtained a completion certificate.
4) Continuously engaged in this occupation for more than 7 years, completed the required hours of training for this occupation at level 1 and obtained a completion certificate. 3.6.2.3 Agricultural Technology Extension (Aquatic Products) Level 2 (one of the following conditions is met) 1) After obtaining the Level 3 vocational qualification certificate for this occupation, he/she has been engaged in this occupation for more than 4 years, and has received the required number of hours of training for the Level 2 vocational training, and obtained a completion certificate.
2) After obtaining the Level 3 vocational qualification certificate for a related occupation, he/she has been engaged in this occupation for more than 5 years, and has received the required number of hours of training for the Level 1 vocational training, and obtained a completion certificate.
3) Graduated from a college or above in this major or a related major: He/she has been engaged in this occupation for more than 10 years, and has received the required number of hours of training for the Level 2 vocational training, and obtained a completion certificate.
3.6.2.4 Agricultural Technology Extension (Aquatic Products) Level 1 (one of the following conditions is met) After obtaining the Level 2 vocational qualification certificate for this occupation, he/she has been engaged in this occupation for more than 4 years, and has received the required number of hours of training for the Level 1 vocational training, and obtained a completion certificate.
3.6.3 Identification method
It is divided into theoretical knowledge test and skill operation assessment. Theoretical knowledge adopts closed-book written test; skill operation assessment adopts on-site actual operation, and is conducted separately, and the assessment team members score each item. Theoretical knowledge test and skill operation assessment are both based on a 100-point system, and those who score 60 points or above are qualified. First-level agricultural technology extension staff (aquatic products) and first-level agricultural technology extension staff (aquatic products) must also undergo comprehensive evaluation. 3.6.4 Ratio of examiners to candidates
The ratio of examiners to candidates for the theoretical knowledge test is 1:20, and there are no less than 2 examiners in each standard classroom; the ratio of examiners to candidates for the skill operation assessment is 1:5, and there are no less than 3 examiners; the comprehensive evaluation committee shall be no less than 5 people. 3.6.5 Identification time
The theoretical knowledge test time is 120 minutes, the skill operation assessment time is no less than 60 points, and the comprehensive evaluation time is no less than 15 minutes. 3.6.6 Identification site and equipment
Theoretical knowledge examination is conducted in a standard classroom; skill operation assessment is conducted in a place that meets the requirements of skill assessment and is equipped with materials, tools, facilities and equipment required for the corresponding level of assessment. 4 Basic requirements
4.1 Professional ethics
4.1.1 Basic knowledge of professional ethics
4.1.2 Professional code
Serve aquatic products, think of fishermen.
Technology promotion, excellence:
3) Hard work, unity and cooperation,
4) Diligent research, truth-seeking and innovation.
4.2 Basic knowledge
4.2.1 Basic knowledge of laws and regulations
1) Relevant knowledge of the "Agricultural Technology Promotion Law" and the "Science and Technology Popularization Law". Relevant knowledge of the "Fisheries Law".
Relevant knowledge of the "Environmental Protection Law", "Marine Environment Protection Law" and "Water Pollution Prevention and Control Law". 3
Knowledge related to the Animal Epidemic Prevention Law.
Knowledge related to the Regulations on the Administration of Traditional Chinese Medicines and the Regulations on the Administration of Feed and Feed Additives, 5
Knowledge related to the Measures for the Administration of Aquatic Seedlings and the Regulations on the Administration of Quality and Safety of Aquaculture 6)
Knowledge related to the pollution-free food label (fishery series). 7)
Professional knowledge
Aquaculture (fishing, processing).
Fishery environment and its protection.
3) Aquaculture breeding projects.
4) Theory of aquatic technology promotion.
4.2.3 Other knowledge
1) Information processing:
2) Computer operation and use.
Knowledge of fishery economy.
4) Knowledge of humanities and social sciences.
5. Work requirements
This standard has progressive technical requirements for level 4, level 3, level 2, and level 1, with higher levels covering lower levels. 5.1 Level 4 agricultural technology extension worker (aquatic products)
I. Information
Collection and processing
, technology
Inquiry and guidance
Work content
(—) Information
(II) Information
(-) Technology
(II) Technology
Skill requirements
1. Able to directly obtain original information on aquatic products by observation and questioning. 2.1. Able to directly obtain aquatic information by checking test files and other materials 3. Able to collect data for aquatic statistical survey projects 1. Able to use language, text, painting and other means to record and transmit aquatic information
2. Able to complete computer recording and printing of information 3. Able to complete information collection, checking and management, etc. Able to complete general aquatic production technology consulting 1. Able to complete aquaculture production technology consulting work 2. Able to complete fishery and aquatic product preservation and processing production technology consulting work
1. Able to guide the breeding technology of conventional aquatic breeding objects 2. Able to guide the breeding technology of famous, special and excellent breeding varieties &. Able to guide the relevant technology of fishing production 4. Able to guide the relevant technology of aquatic product preservation and processing NY/T1548—2007
Related knowledge
1. Observation and access methods for obtaining original aquatic information
2. Aquatic statistical report survey data collection method 1. 1. Knowledge of recording, organizing and computer processing of aquatic information
2. Knowledge of archiving and management of information 1. Knowledge related to technical consultation
2. Basic knowledge of aquaculture
3. Basic knowledge of fishery resources and description 4. Basic knowledge of product preservation and processing
NY/T 1548
III. Experiment
Model
IV. Technology
Training and education
Work content
(II) Objectives
(—) Theory
（) Skills
Table (continued)
Skill requirements
1. Able to master the basic methods and principles of demonstration experiments 2. Able to complete the preparation work before demonstration experiments Related knowledge
1. Principles and methods of demonstration experiments of scientific and technological achievements 2. Implementation of demonstration experiments 8. Able to complete the work or operation required by the demonstration experiment according to the established plan or procedures
4. Able to collect original demonstration data 1. Able to determine the promotion project and the responsible unit 1. Be able to complete the preliminary preparations for aquatic professional technical training and exchange and the preparation of the required equipment. 2. Be able to complete the training of common aquaculture (fishing, processing) production skills and operation training. 1. Be able to complete the detection skills training of physical and chemical indicators such as water temperature, transparency, acidity, economic dissolution, hydrogen and nitrogen in fishery water. 2. Be able to complete the skills training of the use of aerators, microscopes and other display equipment. 5. 2 Level 3 Agricultural Technology Extension (Aquatic Products) Occupation
1. Information
Collection and processing
3. Technology
Consultation and guidance
3. Demonstration and promotion!
Job content
(—Information
(II) Information
—) Technology
(I) Experiment
Skill requirements
1. Ability to use social surveys, questionnaires, statistical reports and other methods to obtain aquatic information
tt||2. Able to obtain aquatic information through conferences, news media, computer networks and other channels
3. Able to obtain aquatic information through experimental methods1. Able to complete the selection, classification and grading of information2. Able to summarize and organize aquatic statistical data1. Able to complete the consultation work on laws, regulations, rules and similar policies related to the promotion of aquatic technology
2. Able to complete the consultation work on the promotion of aquatic production related standards and technical specificationsAble to guide the breeding, quality inspection and germplasm adjustment of aquatic products1. Able to guide the conventional aquaculture products 1. Able to guide the seedling breeding technology of famous and excellent aquaculture varieties 2. Able to guide the quality inspection and quality evaluation of aquatic species 3. Able to complete the organization of new technology introduction, trial and demonstration activities 2. Able to complete the summary and analysis of data and information generated in the trial and demonstration activities 3. Able to complete the analysis and evaluation of the trial and demonstration effects of new technology achievements 3. Knowledge of the use of commonly used instruments and equipment 4. Experimental record methods 1. Social status and 1. Knowledge of resource and environmental conditions survey 2. Principles and methods for project organization and implementation 3. Principles and methods for project technical guidance 1. Training principles and methods
2. Organization and preparation of aquatic technology training activities 3. Practical techniques for skills used in aquaculture (fishing, farming) production activities
1. Water quality standards for fisheries
5. Knowledge of the use, maintenance and care of commonly used observation instruments and equipment
Related knowledge
1. Methods for collecting aquatic information, avoiding discrepancies and statistical reports
2. Methods for collecting aquatic information through conferences, media and computer networks
1. Scientific analysis, classification and screening of aquatic information
2. Methods for summarizing aquatic statistical data
1. Knowledge of laws, regulations and other related to aquatic activities
2. Knowledge of fishery production standards and technical specifications 3. 1. Knowledge of breeding of conventional and superior aquatic species
4. Knowledge related to quality inspection and unique identification of aquatic seedlings
1. Methods for the development of new aquatic technologies
2. Knowledge related to the collection and analysis of experimental data and materials3. Methods for the investigation and evaluation of the introduction of experimental demonstration data
1. Ability to collect, statistically analyze and promote the data formed during the implementation of the project
2. Ability to comprehensively summarize and evaluate the completion of the project implementation3. 1. Statistical analysis of technical and economic data of promotion projects 2. Content and preparation requirements of project summary report and technical summary report 3. Verification and appraisal period of scientific and technological achievements and relevant professional knowledge IV. Technical training and education Work content (I) Theory (continued) Skill requirements 1. Able to complete the teaching work of professional technical training courses 2. Able to use radio, television, magazines, the Internet and other modern media communication channels for training
Training social training work
3. Able to use computer for auxiliary teaching
(II) Skills
1. Able to complete on-site diagnosis of common aquatic diseases and laboratory diagnosis and operation skills training of major aquatic diseases
2. Able to complete buffalo animal quarantine and inspection skills training Second-level agricultural technology extension worker (aquatic products)
, information
collection and processing
III. Technical
Consulting guidance
, experiment
demonstration
, technology
training Education
(1) Information
(2) Information
(3) Technology
(4) Experiment
(5) Project
(6) Skills
Skill requirements
1. Able to plan and design aquatic information collection channels 2. Able to complete the planning, organization and implementation of information collection plans 8. Able to complete special inspections of aquatic technology support projects 1. Able to identify valuable information from information collection samples 2. Able to use computer technology to analyze, process and transmit large amounts of information 3. Able to make relatively simple aquatic technology 1. Able to complete consultation on high-tech technologies related to aquatic products 2. Able to complete consultation on cell technology related to aquatic products 3. Able to complete consultation on gene technology related to aquatic products 1. Able to complete consultation on fermentation technology related to aquatic products 1. Able to guide diagnosis and prevention of aquatic diseases 2. Able to guide quarantine of water animals 3. Able to guide identification of fishery drugs
, Able to guide preparation and feeding of fishery compound feed () 5. Able to guide quality monitoring and testing of aquatic products NY/T 1548—2007
Related knowledge
1. Teaching methods and teaching skills of aquatic training courses 2. Knowledge of TV, radio and network teaching media and communication
4. Knowledge of computer-assisted teaching
5. Practical skills in diagnosis of aquatic diseases and experimental rates
6. Practical skills in epidemic prevention and inspection of aquatic animals
Related knowledge
1. Knowledge related to information collection planning and design
2. Knowledge related to planning and organization and implementation of information collection plans
3.Special adjustment methods for aquatic technology promotion projects 1. Methods for assessing aquatic information
2. Knowledge related to computer analysis of aquatic information 3. Simple web page creation techniques
1. High-tech technologies related to aquatic production, such as correction, gene, inheritance and fermentation (limitation)
2. Aquatic disease diagnosis and prevention and control technology
3. Regulations and related knowledge on aquatic animal epidemic prevention
4. Knowledge on identification and use of fishery drugs
5. Knowledge on nutrition of fish (shrimp, shellfish) and preparation of feed (bait) 6. Early detection technology of aquatic product quality
1. Able to conduct economic, environmental and risk assessment and analysis on the new technological achievements introduced
2. Able to formulate trial demonstration plans or operating procedures for assessment and analysis. 1. Able to complete the feasibility analysis and demonstration work of aquatic product promotion and development projects, and scientifically prepare feasibility study reports
2. Able to formulate implementation plans and technical routes for aquatic product promotion and development projects 1. Able to compile aquatic product professional and technical theory training materials 2. Able to write training materials on aquatic product related laws and regulations 3. Able to complete the third and fourth level aquatic product promotion and development personnel training 1. Able to complete the aquatic product quality inspection and operation skills training 2. Able to complete the quality identification and use of fishery drugs 3. Able to complete the quality inspection and detection of fishery feed 4. Able to conduct technical training for the third and fourth level aquatic product promotion and development personnel 1. Feasibility analysis and demonstration methods and preparation of the project 2. Preparation of implementation plans and technical routes for aquatic product promotion and development projects
1. Preparation of aquatic product professional and technical training lesson plans and aquatic product related laws and regulations training lesson plans
2 Aquatic product quality inspection, quality identification of fishery drugs, and practical operation of fishery (bait) quality inspection 5
NY/T 15482007
Grade 1 Agricultural Technical Extensionist [Aquatic Products]
Job Content!
1. Information
Collection and Processing
2. Technology
Consultation and Guidance
3. Experiment
Demonstration and Extension
4. Technology
Control Training and Education
（—）Information
() Technology
(II) Technology
（—）Experiment
(III) Item
（—）Theory
(II ) Skills
6 Weight
6.1 Theoretical knowledge
Skill requirements
1. Able to propose scientific and reasonable disposal solutions for high-value aquatic information
2. Able to establish an aquatic information database
1. Able to provide planning and decision-making consulting services to fishery production organizations and government departments
2. Able to provide consulting services in resource valuation, risk control, etc. to the society 1. Able to guide the scientific utilization and protection of fishery resources and environment 2. Able to guide aquaculture planning, engineering design and construction related technologies 8. Able to guide the comprehensive management and administration of fishery production 1. Able to scientifically regulate the introduction, experiment and demonstration of new aquatic technology achievements in the region, and formulate planning schemes 2. Able to systematically and scientifically summarize the latest aquatic technology and new experience, and be able to improve, promote and enhance
\, able to formulate aquatic promotion and development strategies, and formulate regional aquatic technology planning and project guidelines
2. Able to establish and determine the indicator system for the technical and economic effect evaluation of aquatic technology promotion and development projects
and related knowledge
1. The formulation of high-value aquatic information application plans 2. Aquatic technology information data processing technology
1. Knowledge related to aquatic resources and risk assessment 2. Knowledge related to fishery resources and fishery environment protection 3. Aquaculture 1. Process and equipment design and related knowledge 4. Social and economic knowledge
5. Comprehensive knowledge of aquaculture operation and management
1. Methods for planning and writing advanced experimental demonstration activities
2. Methods for systematic and scientific summary and improvement of sample experience
3. Methods for collecting and improving new aquatic technology achievements 1. Methods for compiling regional promotion project plans and project guidelines
2. Project technology, economic effect evaluation criteria system and evaluation methods
Based on actual needs and aquaculture technology development trends, training plans and training programs can be formulated
2. Able to complete the comprehensive training of aquatic technology theory for second, third and fourth level aquatic product extension personnel
1. Able to guide college students to implement new aquatic product theories and practical operations 2. Able to complete the training and assessment of the operational skills of second, third and fourth level aquatic product extension personnel
Professional ethics
Basic knowledge
Information collection and processing
Technical consultation and guidance
Trial demonstration and promotion
Technical training and education
Information collection
Information collation
Technical consultation
Technical guidance
Trial demonstration
Project promotion!
Theoretical training
Skill training
Level ()
1. Knowledge of aquatic technology extension system
2. Practice guidance method
Level three ()
Level two (%)
Level (%)
6.2 Skill operation
Information collection and processing
Technical consultation and guidance
Experimental demonstration and extension
Technical training and education
Information collection
Information collation
Technical consultation
Technical guidancewww.bzxz.net
Experimental demonstration
Trivia promotion
Theoretical training
Skill training
Level four (%)
Level three (%)
NY/T 1548 2007
Level <%)Able to provide consulting services in resource evaluation, risk control, etc. to the society
1. Able to guide the scientific utilization and protection of fishery resources and environment 2. Able to guide aquaculture planning, engineering design and construction related technologies 8. Able to guide the comprehensive management and administration of fishery production 1. Able to scientifically regulate the introduction, trial and demonstration of new aquatic technology achievements in the region, and formulate planning schemes 2. Able to systematically and scientifically summarize the latest aquatic new technologies and experiences, and be able to improve, promote and enhance
\, able to formulate aquatic promotion and development strategies, and formulate regional aquatic technology planning and project guidelines
2. Able to establish and determine the indicator system for the technical and economic effect evaluation of aquatic technology promotion and development projects
and related knowledge
1. The formulation of high-value aquatic information application plans 2. Aquatic technology information data processing technology
1. Knowledge related to aquatic resources and risk assessment 2. Knowledge related to fishery resources and fishery environment protection 3. Aquaculture 1. Process and equipment design and related knowledge 4. Social and economic knowledge
5. Comprehensive knowledge of aquaculture operation and management
1. Methods for planning and writing advanced experimental demonstration activities
2. Methods for systematic and scientific summary and improvement of sample experience
3. Methods for collecting and improving new aquatic technology achievements 1. Methods for compiling regional promotion project plans and project guidelines
2. Project technology, economic effect evaluation criteria system and evaluation methods
Based on actual needs and aquaculture technology development trends, training plans and training programs can be formulated
2. Able to complete the comprehensive training of aquatic technology theory for second, third and fourth level aquatic product extension personnel
1. Able to guide college students to implement new aquatic product theories and practical operations 2. Able to complete the training and assessment of the operational skills of second, third and fourth level aquatic product extension personnel
Professional ethics
Basic knowledge
Information collection and processing
Technical consultation and guidance
Trial demonstration and promotion
Technical training and education
Information collection
Information collation
Technical consultation
Technical guidance
Trial demonstration
Project promotion!
Theoretical training
Skill training
Level ()
1. Knowledge of aquatic technology extension system
2. Practice guidance method
Level three ()
Level two (%)
Level (%)
6.2 Skill operation
Information collection and processing
Technical consultation and guidance
Experimental demonstration and extension
Technical training and education
Information collection
Information collation
Technical consultation
Technical guidance
Experimental demonstration
Trivia promotion
Theoretical training
Skill training
Level four (%)
Level three (%)
NY/T 1548 2007
Level <%)Able to provide consulting services in resource evaluation, risk control, etc. to the society
1. Able to guide the scientific utilization and protection of fishery resources and environment 2. Able to guide aquaculture planning, engineering design and construction related technologies 8. Able to guide the comprehensive management and administration of fishery production 1. Able to scientifically regulate the introduction, trial and demonstration of new aquatic technology achievements in the region, and formulate planning schemes 2. Able to systematically and scientifically summarize the latest aquatic new technologies and experiences, and be able to improve, promote and enhance
\, able to formulate aquatic promotion and development strategies, and formulate regional aquatic technology planning and project guidelines
2. Able to establish and determine the indicator system for the technical and economic effect evaluation of aquatic technology promotion and development projects
and related knowledge
1. The formulation of high-value aquatic information application plans 2. Aquatic technology information data processing technology
1. Knowledge related to aquatic resources and risk assessment 2. Knowledge related to fishery resources and fishery environment protection 3. Aquaculture 1. Process and equipment design and related knowledge 4. Social and economic knowledge
5. Comprehensive knowledge of aquaculture operation and management
1. Methods for planning and writing advanced experimental demonstration activities
2. Methods for systematic and scientific summary and improvement of sample experience
3. Methods for collecting and improving new aquatic technology achievements 1. Methods for compiling regional promotion project plans and project guidelines
2. Project technology, economic effect evaluation criteria system and evaluation methods
Based on actual needs and aquaculture technology development trends, training plans and training programs can be formulated
2. Able to complete the comprehensive training of aquatic technology theory for second, third and fourth level aquatic product extension personnel
1. Able to guide college students to implement new aquatic product theories and practical operations 2. Able to complete the training and assessment of the operational skills of second, third and fourth level aquatic product extension personnel
Professional ethics
Basic knowledge
Information collection and processing
Technical consultation and guidance
Trial demonstration and promotion
Technical training and education
Information collection
Information collation
Technical consultation
Technical guidance
Trial demonstration
Project promotion!
Theoretical training
Skill training
Level ()
1. Knowledge of aquatic technology extension system
2. Practice guidance method
Level three ()
Level two (%)
Level (%)
6.2 Skill operation
Information collection and processing
Technical consultation and guidance
Experimental demonstration and extension
Technical training and education
Information collection
Information collation
Technical consultation
Technical guidance
Experimental demonstration
Trivia promotion
Theoretical training
Skill training
Level four (%)
Level three (%)
NY/T 1548 2007
Level <%)
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