China National Standards

China and GB Standards English PDF List


GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards;  We provide Chinese GB standards and English version GB standards  Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services.
  •  China "and" GB Standards English PDF List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 40067-2021 Microstructure and defect determination of tungsten carbide powder
    碳化钨粉末微观组织及缺陷检测方法
    China National Standards
    and

    English PDF
    GB/T 39989-2021 Superelastic titanium-nickel shape memory alloy bar and wire
    超弹性钛镍形状记忆合金棒材和丝材
    China National Standards
    and

    English PDF
    GB/T 39981-2021 Building construction machinery and equipment—Portable,hand-held,internal combustion engine driven cut-off machines—Safety requirements
    建筑施工机械与设备 便携、手持、内燃机式切割机 安全要求
    China National Standards
    and

    English PDF
    GB/T 39971-2021 Thresholds and grading of relative wet grip index for motor vehicle tyres
    汽车轮胎湿路面相对抓着指数限值和等级
    China National Standards
    and

    English PDF
    GB/T 39970-2021 Thresholds and grading of coast-by noise for motor vehicle tyres
    汽车轮胎惯性滑行通过噪声限值和等级
    China National Standards
    and

    English PDF
    GB/T 39515.2-2021 Agricultural and forestry machinery-Environmental requirements for sprayers-Part 2:Horizontal boom sprayers
    农林机械 喷雾机的环境要求 第2部分:水平喷杆式喷雾机
    China National Standards
    and

    English PDF
    GB/T 38329.2-2021 Utility connections in port - Part 2: High and low voltage shore connection systems - Data communication for monitoring and control
    港口船岸连接 第2部分:高压和低压岸电连接系统 监测和控制的数据传输
    China National Standards
    and

    English PDF
    GB/T 38051.1-2021 Household electric cooking appliances—Part 1:Ranges, ovens, steam ovens and grills—Methods for measuring performance
    家用烹饪电器 第1部分:电灶、烤箱、蒸箱和烤架 性能测试方法
    China National Standards
    and

    English PDF
    GB/T 38010.3-2021 Spectacle frames and sunglasses electronic catalogue and identification—Part 3: Technical information
    眼镜架和太阳镜电子目录与识别 第3部分:技术信息
    China National Standards
    and

    English PDF
    GB/T 38010.2-2021 Spectacle frames and sunglasses electronic catalogue and identification—Part 2: Commercial information
    眼镜架和太阳镜电子目录与识别 第2部分:商业信息
    China National Standards
    and

    English PDF
    GB/T 35205.5-2021 Rough-terrain trucks - Safety requirements and verificaiton - Part 5: Interface between variable-reach truck and integrated personnnel work platform
    越野叉车 安全要求及验证 第5部分:伸缩臂式叉车和集成式人员工作平台的连接装置
    China National Standards
    and

    English PDF
    GB/T 31838.7-2021 Solid insulating materials - Dielecteric and resistive properties - Part 7: Resistive properties(DC method) - Measurement of volume resistance and volume resistivity at elevated temperatures
    固体绝缘材料 介电和电阻特性 第7部分:电阻特性(DC方法) 高温下测量体积电阻和体积电阻率
    China National Standards
    and

    English PDF
    GB/T 31838.6-2021 Solid insulating materials—Dielectric and resistive properties—Part 6:Dielectric properties(AC method)—Relative permittivity and dielectric dissipation factor(frequencies 0.1Hz~10 MHz)
    固体绝缘材料 介电和电阻特性 第6部分:介电特性(AC方法) 相对介电常数和介质损耗因数(频率0.1Hz~10MHz)
    China National Standards
    and

    English PDF
    GB/T 31838.5-2021 Solid insulating materials - Dielectric and resistive properties - Part 5: Resistive properties(DC method) - Volume resistance and volume resistivity of impregnation and coating materials
    固体绝缘材料 介电和电阻特性 第5部分:电阻特性(DC方法) 浸渍和涂层材料的体积电阻和体积电阻率
    China National Standards
    and

    English PDF
    GB/T 29716.3-2021 Mechanical vibration and shock—Signal processing—Part 3:Methods of time-frequency analysis
    机械振动与冲击 信号处理 第3部分:时频分析方法
    China National Standards
    and

    English PDF
    GB/T 28897-2021 Steel-plastic compound pipes and fittings for fluid service
    流体输送用钢塑复合管及管件
    China National Standards
    and

    English PDF
    GB/T 27021.3-2021 Conformity assessment - Requirements for bodies providing audit and certification of management systems - Part 3: Competence requirements for auditing and certification of quality management systems
    合格评定 管理体系审核认证机构要求 第3部分:质量管理体系审核与认证能力要求
    China National Standards
    and

    English PDF
    GB/T 27021.2-2021 Conformity assessment - Requirements for bodies providing audit and certification of management systems - Part 2: Competence requirements for auditing and certification of environmental management systems
    合格评定 管理体系审核认证机构要求 第2部分:环境管理体系审核与认证能力要求
    China National Standards
    and

    English PDF
    GB/T 25672-2021 Hammer drill bit and shell hammer drill bit
    电锤钻和套式电锤钻
    China National Standards
    and

    English PDF
    GB/T 24817.2-2021 Cranes-Control layout and characteristics-Part 2:Moblie cranes
    起重机 控制装置布置形式和特性 第2部分:流动式起重机
    China National Standards
    and

    English PDF
    GB/T 24810.2-2021 Cranes-Limiting and indicating devices-Part 2:Mobile cranes
    起重机 限制器和指示器 第2部分:流动式起重机
    China National Standards
    and

    English PDF
    GB/T 24619-2021 Synchronous belt drives - Curvilinear profile systems G, H, R and S belts and pulleys
    同步带传动 G、H、R、S齿型曲线齿同步带与带轮
    China National Standards
    and

    English PDF
    GB/T 23902-2021 Non-destructive testing - Ultrasonic testing - Time-of-flight diffraction technique as a method for detection and sizing of discontinuities
    无损检测 超声检测 超声衍射声时技术检测和评价方法
    China National Standards
    and

    English PDF
    GB/T 23537-2021 Superabrasive products - Grinding wheels and mounted points with diamond or cubic boron nitride - Limit deviations and run-out tolerances
    超硬磨料制品 金刚石或立方氮化硼砂轮和磨头 极限偏差和圆跳动公差
    China National Standards
    and

    English PDF
    GB/T 23293-2021 Nitride bonded refractory products and their related mortars
    氮化物结合耐火制品及其配套耐火泥浆
    China National Standards
    and

    English PDF
    GB/T 22889-2021 Leather—Physical and mechanical tests—Determination of surface coating thickness
    皮革 物理和机械试验 表面涂层厚度的测定
    China National Standards
    and

    English PDF
    GB/T 22888-2021 Leather - Physical and mechanical tests - Determination of cold crack temperature of surface coatings
    皮革 物理和机械试验 表面涂层低温脆裂温度的测定
    China National Standards
    and

    English PDF
    GB/T 22808-2021 Leather and fur-Chemical tests-Determination of chlorinated phenols content
    皮革和毛皮 化学试验 含氯苯酚的测定
    China National Standards
    and

    English PDF
    GB/T 22685-2021 Packaging and label on controls for househole and similar use
    家用和类似用途控制器的包装和标志
    China National Standards
    and

    English PDF
    GB/T 17934.8-2021 Graphic technology—Process control for the production of half-tone colour separations, proof and production prints—Part 8:Validation print processes working directly from digital data
    印刷技术 网目调分色版、样张和生产印刷品的加工过程控制 第8部分:直接使用数字数据的验证印刷品制作过程
    China National Standards
    and

    English PDF
    GB/T 17934.7-2021 Graphic technology—Process control for the production of half-tone colour separations,proof and production prints—Part 7:Proofing processes working directly from digital data
    印刷技术 网目调分色版、样张和生产印刷品的加工过程控制 第7部分:直接使用数字数据的打样过程
    China National Standards
    and

    English PDF
    GB/T 17934.2-2021 Graphic technology—Process control for the production of half-tone colour separations,proof and production prints—Part 2:Offset lithographic processes
    印刷技术 网目调分色版、样张和生产印刷品的加工过程控制 第2部分:平版胶印
    China National Standards
    and

    English PDF
    GB/T 17934.1-2021 Graphic technology-Process control for the production of half-tone colour separations,proof and production prints-Part 1:Parameters and measurement methods
    印刷技术 网目调分色版、样张和生产印刷品的加工过程控制 第1部分:参数与测量方法
    China National Standards
    and

    English PDF
    GB/T 17739.2-2021 Microfilming of technical drawings and other drawing office documents—Part 2:Quality criteria and control of 35 mm silver gelatin microfilms
    技术图样与技术文件的缩微摄影 第2部分: 35mm银-明胶型缩微品的质量准则与控制
    China National Standards
    and

    English PDF
    GB/Z 17624.3-2021 Electromagnetic compatibility - General - Part 3: The effects of high-altitude EMP(HEMP) on civil equipment and systems
    电磁兼容 综述 第3部分:高空电磁脉冲(HEMP)对民用设备和系统的效应
    China National Standards
    and

    English PDF
    GB/T 16828-2021 Bar code for commodity—Global location numbering and bar code marking
    商品条码 参与方位置编码与条码表示
    China National Standards
    and

    English PDF
    GB/T 16458-2021 Terminology for abrasives and abrasive products
    磨料磨具术语
    China National Standards
    and

    English PDF
    GB/T 15972.47-2021 Specifications for optical fibre test method - Part 47: Measurement methods and test procedures for transmission characteristics - Macrobending loss
    光纤试验方法规范 第47部分:传输特性的测量方法和试验程序 宏弯损耗
    China National Standards
    and

    English PDF
    GB/T 15242.4-2021 Dimensions series of rod and piston dynamic seals for hydraulic cylinders-Part 4:Dimensions and tolerances of bearing rings groove
    液压缸活塞和活塞杆动密封装置尺寸系列 第4部分:支承环安装沟槽尺寸系列和公差
    China National Standards
    and

    English PDF
    GB/T 15242.3-2021 Dimensions series of rod and piston dynamic seals for hydraulic cylinders-Part 3:Dimensions and tolerances of groove for co-axial seals
    液压缸活塞和活塞杆动密封装置尺寸系列 第3部分:同轴密封件沟槽尺寸系列和公差
    China National Standards
    and

    English PDF
    GB/T 13469-2021 Economical operation for centrifugal,mixed flow and axial flow pump systems
    离心泵、混流泵与轴流泵系统经济运行
    China National Standards
    and

    English PDF
    GB/T 13163.2-2021 Radiation protection instrumentation—Radon and radon decay product measuring instruments—Part 2:Specific requirements for 222Rn and 220Rn measuring instruments
    辐射防护仪器 氡及氡子体测量仪 第2部分:222Rn和220Rn测量仪的特殊要求
    China National Standards
    and

    English PDF
    GB/T 12773-2021 Valve steel and superalloy bars for internal combustion engines
    内燃机气阀用钢及合金棒材
    China National Standards
    and

    English PDF
    GB/T 12719-2021 Exploration specification of hydrogeology and engineering geology in mining areas
    矿区水文地质工程地质勘查规范
    China National Standards
    and

    English PDF
    GB/T 11362-2021 Synchronous belt drives—Calculation of power rating and drive center distance with belts pitch codes MXL,XXL,XL,L,H,XH and XXH
    同步带传动 节距型号MXL,XXL,XL,L,H,XH和XXH梯形齿同步带额定功率和传动中心距计算
    China National Standards
    and

    English PDF
    GB/T 10067.36-2021 Basic specification for electroheating and electromagnetic processing installations—Part 36:Induction through-heating installations
    电热和电磁处理装置基本技术条件 第36部分:感应透热装置
    China National Standards
    and

    English PDF
    GB/T 10066.32-2021 Test methods for electroheating and electromagnetic processing installations-Part 32:Induction through-heating installations
    电热和电磁处理装置的试验方法 第32部分:感应透热装置
    China National Standards
    and

    English PDF
    GB/T 9966.11-2021 Test methods for natural stone—Part 11: Determination of resistance to ageing by cold and thermal shock
    天然石材试验方法 第11部分:激冷激热加速老化强度测定
    China National Standards
    and

    English PDF
    GB/T 8366-2021 Resistance welding—Resistance welding equipment—Mechanical and electrical requirements
    电阻焊 电阻焊设备 机械和电气要求
    China National Standards
    and

    English PDF
    GB/T 8243.12-2021 Methods of test for full-flow lubricating oil filters for internal combustion engines—Part 12: Filtration efficiency using particle counting and contaminant retention capacity
    内燃机全流式机油滤清器试验方法 第12部分:颗粒计数法滤清效率和容灰量
    China National Standards
    and

    English PDF
    GB/T 6577-2021 Types,dimensions and tolerances of groove for seals with bearing rings for hydraulic cylinders piston
    液压缸活塞用带支承环密封沟槽型式、尺寸和公差
    China National Standards
    and

    English PDF
    GB/T 6113.103-2021 Specification for radio disturbance and immunity measuring apparatus and methods—Part 1-3:Radio disturbance and immunity measuring apparatus—Ancillary equipment—Disturbances power
    无线电骚扰和抗扰度测量设备和测量方法规范 第1-3部分:无线电骚扰和抗扰度测量设备 辅助设备 骚扰功率
    China National Standards
    and

    English PDF
    GB/T 6068-2021 Test code for truck crane and tyre crane
    汽车起重机和轮胎起重机试验规范
    China National Standards
    and

    English PDF
    GB/T 5900.1-2021 Machine tools—Connecting dimensions of spindle noses and work holding chucks—Part 1: Conical connection
    机床 主轴端部与卡盘连接尺寸 第1部分:圆锥连接
    China National Standards
    and

    English PDF
    GB/T 4798.2-2021 Classification of environmental conditions—Classification of groups of environmental parameters and their severities—Part 2:Transportation and handling
    环境条件分类 环境参数组分类及其严酷程度分级 第2部分:运输和装卸
    China National Standards
    and

    English PDF
    GB/T 3480.5-2021 Calculation of load capacity of spur and helical gears—Part 5:Strength and quality of materials
    直齿轮和斜齿轮承载能力计算 第5部分:材料的强度和质量
    China National Standards
    and

    English PDF
    GB/T 2424.6-2021 Environmental testing-Part 3:Supporting documentation and guidance- Confirmation of the performance of temperature/humidity chambers
    环境试验 第3部分:支持文件及导则 温度/湿度试验箱性能确认
    China National Standards
    and

    English PDF
    GB/T 2424.5-2021 Environmental testing—Part 3:Supporting documentation and guidance—Confirmation of the performance of temperature chambers
    环境试验 第3部分:支持文件及导则 温度试验箱性能确认
    China National Standards
    and

    English PDF
    GB/T 2423.38-2021 Environmental testing-Part 2:Test methods-Test R:Water test method and guidance
    环境试验 第2部分:试验方法 试验R:水试验方法和导则
    China National Standards
    and

    English PDF
    GB/T 2351-2021 Fluid power systems and components-Outside diameters of tubes and inside diameters of hoses
    流体传动系统及元件 硬管外径和软管内径
    China National Standards
    and

    English PDF
    GB/T 1551-2021 Test method for measuring resistivity of monocrystal silicon—In-line four-point probe and direct current two-point probe method
    硅单晶电阻率的测定 直排四探针法和直流两探针法
    China National Standards
    and

    English PDF
    GB/T 786.3-2021 Fluid power systems and components—Graphical symbols and circuit diagrams—Part 3: Symbol modules and connected symbols in circuit diagrams
    流体传动系统及元件 图形符号和回路图 第3部分:回路图中的符号模块和连接符号
    China National Standards
    and

    English PDF
    GB/T 786.1-2021 Fluid power systems and components—Graphical symbols and circuit diagrams—Part 1:Graphical symbols
    流体传动系统及元件 图形符号和回路图 第1部分:图形符号
    China National Standards
    and

    English PDF
    GB/T 22394.2-2021 Condition monitoring and diagnostics of machines - Data interpretation and diagnostics techniques - Part 2: Data-driven applications
    机器状态监测与诊断 数据判读与诊断技术 第2部分:数据驱动的应用
    China National Standards
    and

    English PDF
    GB/T 22114-2021 Humectants for toothpastes - Glycerin and polyethylene glycol
    牙膏用保湿剂 甘油和聚乙二醇
    China National Standards
    and

    English PDF
    GB/T 19216.3-2021 Circuit integrity test for electric cables or optical fiber cables under fire conditions—Part 3:Test method for fire with shock at a temperature of at least 830℃ for cables of rated voltage up to and including 0.6/1 kV tested in a metal enclosure
    在火焰条件下电缆或光缆的线路完整性试验 第3部分:火焰温度不低于830 ℃的供火并施加冲击振动,额定电压0.6/1 kV及以下电缆穿在金属管中进行的试验方法
    China National Standards
    and

    English PDF
    GB/T 19216.2-2021 Circuit integrity test for electric cables or optical fiber cables under fire conditions - Part 2: Test method for fire with shock at a temperature of at least 830 ℃ for cables of rated voltage up to and including 0.6/1 kV and with an overall diameter not
    在火焰条件下电缆或光缆的线路完整性试验 第2部分:火焰温度不低于830 ℃的供火并施加冲击振动,额定电压0.6/1 kV及以下外径不超过20 mm电缆的试验方法
    China National Standards
    and

    English PDF
    GB/T 19216.1-2021 Circuit integrity test for electric cables or optical fiber cables under fire conditions-Part 1:Test method for fire with shock at atemperature of at least 830 ℃ for cables of rated voltage up to and including 0.6/ 1 kV and with an overall diameter exceed
    在火焰条件下电缆或光缆的线路完整性试验 第1部分:火焰温度不低于830 ℃的供火并施加冲击振动,额定电压0.6/1 kV及以下外径超过20 mm电缆的试验方法
    China National Standards
    and

    English PDF
    GB/T 18341-2021 Specifications of survey for geological and mineral resources exploration
    地质矿产勘查测量规范
    China National Standards
    and

    English PDF
    GB/T 18216.5-2021 Electrical safety in low voltage distribution systems up to 1 000 V a.c, and 1500 V d.c.-Equipment for testing,measuring or monitoring of protective measures-Part 5:Resistance to earth
    交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第5部分:对地电阻
    China National Standards
    and

    English PDF
    GB/T 18216.4-2021 Electrical safety in low voltage distribution systems up to 1 000 V a. c and 1 500 V d. c - Equipment for testing, measuring or monitoring of protective measures - Part 4: Resistance of earth connection and equipotential bonding
    交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第4部分:接地电阻和等电位接地电阻
    China National Standards
    and

    English PDF
    GB/T 18216.3-2021 Electrical safety in low voltage distribution systems up to 1 000 V a. c. and 1 500 V d. c. - Equipment for testing, measuring or monitoring of protective measures - Part 3: Loop impedance
    交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第3部分:环路阻抗
    China National Standards
    and

    English PDF
    GB/T 18216.2-2021 Electrical safety in low voltage distribution systems up to 1 000 V a. c. and 1 500 V d. c. - Equipment for testing, measuring or monitoring of protective measures - Part 2: Insulation resistance
    交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第2部分:绝缘电阻
    China National Standards
    and

    English PDF
    GB/T 18216.1-2021 Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c.—Equipment for testing,measuring or monitoring of protective measures—Part 1:General requirements
    交流1000V和直流1500V及以下低压配电系统电气安全 防护措施的试验、测量或监控设备 第1部分:通用要求
    China National Standards
    and

    English PDF
    GB/T 40169-2021 Compression-moulded plates of ultra-high-molecular-weight polyethylene(PE-UHMW)and high density polyethylene (PE-HD)
    超高分子量聚乙烯(PE-UHMW)和高密度聚乙烯(PE-HD)模塑板材
    China National Standards
    and

    English PDF
    GB/T 40151-2021 Security and resilience—Emergency management—Guidelines for capability assessment
    安全与韧性 应急管理 能力评估指南
    China National Standards
    and

    English PDF
    GB/T 8897.2-2021 Primary batteries—Part 2: Physical and electrical specifications
    原电池 第2部分:外形尺寸和电性能
    China National Standards
    and

    English PDF
    GB 40165-2021 Lithium ion cells and batteries used in stationary electronic equipments—Safety technical specification
    固定式电子设备用锂离子电池和电池组 安全技术规范
    China National Standards
    and

    English PDF
    GB 17957-2021 Rock drilling machines and pneumatic tools—Safety requirements
    凿岩机械与气动工具 安全要求
    China National Standards
    and

    English PDF
    GB 18382-2021 Fertilizer marking—Presentation and declaration
    肥料标识 内容和要求
    China National Standards
    and

    English PDF
    GB 40164-2021 Automobiles and trailer - Specifications and test methods of brake part
    汽车和挂车 制动器用零部件技术要求及试验方法
    China National Standards
    and

    English PDF
    GB/T 40043-2021 Specification of information exchange between express service and electronic commerce
    快递服务与电子商务信息交换规范
    China National Standards
    and

    English PDF
    GB/T 39885-2021 Examination methods for triazolam in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
    疑似毒品中三唑仑检验 气相色谱和气相色谱-质谱法
    China National Standards
    and

    English PDF
    GB/T 39884-2021 Examination methods for three components in cannabis in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
    疑似毒品中大麻三种成分检验 气相色谱和气相色谱-质谱法
    China National Standards
    and

    English PDF
    GB/T 39883-2021 Examination methods for morphine in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
    疑似毒品中吗啡检验 气相色谱和气相色谱-质谱法
    China National Standards
    and

    English PDF
    GB/T 39882-2021 Examination methods for methylene dioxymetham phetamine in suspected drugs -- Gas chromatography and gas chromatography-mass spectrometry
    疑似毒品中二亚甲基双氧安非他明检验 气相色谱和气相色谱-质谱法
    China National Standards
    and

    English PDF
    GB/T 39881-2021 Examination methods for methaqualone in suspected drugs -- Gas chromatography and gas chromatography-mass spectrometry
    疑似毒品中安眠酮检验 气相色谱和气相色谱-质谱法
    China National Standards
    and

    English PDF
    GB/T 39880-2021 Examination methods for methadone in suspected drugs -- Gas chromatography and gas chromatography-mass spectrometry
    疑似毒品中美沙酮检验 气相色谱和气相色谱-质谱法
    China National Standards
    and

    English PDF
    GB/T 39879-2021 Examination methods for five components in opium in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
    疑似毒品中鸦片五种成分检验 气相色谱和气相色谱-质谱法
    China National Standards
    and

    English PDF
    GB/T 39878-2021 Examination methods for estazolam in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
    疑似毒品中艾司唑仑检验 气相色谱和气相色谱-质谱法
    China National Standards
    and

    English PDF
    GB/T 39877-2021 Examination methods for diazepam in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
    疑似毒品中地西泮检验 气相色谱和气相色谱-质谱法
    China National Standards
    and

    English PDF
    GB/T 39876-2021 Examination methods for cocaine in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
    疑似毒品中可卡因检验 气相色谱和气相色谱-质谱法
    China National Standards
    and

    English PDF
    GB/T 39875-2021 Examination methods for chlordiazepoxide in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
    疑似毒品中氯氮卓检验 气相色谱和气相色谱-质谱法
    China National Standards
    and

    English PDF
    GB/T 39874-2021 Examination methods for bromazepam in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
    疑似毒品中溴西泮检验 气相色谱和气相色谱-质谱法
    China National Standards
    and

    English PDF
    GB/T 15972.42-2021 Specifications for optical fibre test methods—Part 42:Measurement methods and test procedures for transmission characteristics—Chromatic dispersion
    光纤试验方法规范 第42部分:传输特性的测量方法和试验程序 波长色散
    China National Standards
    and

    English PDF
    GB 5084-2021 Standard for irrigation water quality
    农田灌溉水质标准
    China National Standards
    and

    English PDF
    GB/T 40086-2021 Synthetic ice rink - General technical requirements and test methods
    仿真冰场 通用技术要求和试验方法
    China National Standards
    and

    English PDF
    GB/T 40047-2021 Personal protective equipment-Eye and face protection for sports use-Ski goggles
    个体防护装备 运动眼面部防护 滑雪镜
    China National Standards
    and

    English PDF
    GB/T 40056-2021 Standard color sample for flag of the Communist Youth League of China
    中国共产主义青年团团旗颜色标准样品
    China National Standards
    and

    English PDF
    GB/T 40051-2021 Code of recycle and utilization for discarded wood-based panels
    废旧人造板回收利用规范
    China National Standards
    and

    English PDF

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