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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. |
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 26572-2011 |
Requirements for Limits of Restricted Substances in Electrical and Electronic Products (Amendment No. 1) 电子电气产品中限用物质的限量要求《第1号修改单》 |
China National Standards Electron |
 English PDF |
| GB/T 44108-2024 |
Requirements for Electronic (digital) ledger management of enterprise statistical surveys 企业统计调查电子（数字）台账管理要求 |
China National Standards Electron |
English PDF |
| GB/T 39560.12-2024 |
Determination of certain substances in Electronic and electrical products-Part 12: Simultaneous determination of polybrominated biphenyls, polybrominated diphenyl ethers and phthalates in polymers by gas chromatography-mass spectrometry 电子电气产品中某些物质的测定-第12部分：气相色谱-质谱法同时测定聚合物中的多溴联苯、多溴二苯醚和邻苯二甲酸酯 |
China National Standards Electron |
English PDF |
| GB/T 5169.23-2024 |
Fire hazard tests for electrical and Electronic products - Part 23: Test flame - 500W vertical flame test method for polymer tubular materials 电工电子产品着火危险试验-第23部分：试验火焰-聚合物管形材料500W垂直火焰试验方法 |
China National Standards Electron |
English PDF |
| GB/T 26669-2024 |
Environmental awareness design of electrical and Electronic products-Terminology 电工电子产品环境意识设计-术语 |
China National Standards Electron |
English PDF |
| GB/T 17699.1-2024 |
Electronic data exchange for administration, commerce and transportation-Part 1: Data element directory 行政、商业和运输业电子数据交换-第1部分：数据元目录 |
China National Standards Electron |
English PDF |
| GB/T 17699.2-2024 |
Electronic data exchange for administration, commerce and transportation-Part 2: Composite data element directory 行政、商业和运输业电子数据交换-第2部分：复合数据元目录 |
China National Standards Electron |
English PDF |
| GB/T 17699.3-2024 |
Electronic data exchange for administration, commerce and transportation-Part 3: Segment directory 行政、商业和运输业电子数据交换-第3部分：段目录 |
China National Standards Electron |
English PDF |
| GB/T 9536.1-2024 |
Electromechanical switches for electrical and Electronic equipment-Part 1: General specifications 电气和电子设备用机电开关-第1部分：总规范 |
China National Standards Electron |
English PDF |
| GB/T 44078-2024 |
Determination of optical center spacing in optoElectronic systems - Low coherence interferometry 光电系统中光学中心间距的测定-低相干干涉测量法 |
China National Standards Electron |
English PDF |
| GB/T 20871.61-2024 |
Organic light-emitting diode display devices - Part 6-1: Test methods for optical and optoElectronic parameters 有机发光二极管显示器件-第6-1部分：光学和光电参数测试方法 |
China National Standards Electron |
English PDF |
| GB/T 33352-2024 |
General application rules for screening restricted substances in Electronic and electrical products-X-ray fluorescence spectrometry 电子电气产品中限用物质筛选应用通则-X射线荧光光谱法 |
China National Standards Electron |
English PDF |
| GB/T 3594-2024 |
Technical requirements for power supply of Electronic equipment for fishing vessels 渔船用电子设备电源技术要求 |
China National Standards Electron |
English PDF |
| GB/T 43883-2024 |
Microbeam analysis - analytical Electron microscopy - determination method of the number density of nanoparticles in metals 微束分析-分析电子显微术-金属中纳米颗粒数密度的测定方法 |
China National Standards Electron |
English PDF |
| GB/T 43889-2024 |
Microbeam analysis - Guidelines for the implementation of quality assurance procedures for Electron probe microanalyzers (EPMA) 微束分析-电子探针显微分析仪（EPMA）质量保证程序实施导则 |
China National Standards Electron |
English PDF |
| GB/T 43965-2024 |
Electronic grade tetraethyl orthosilicate 电子级正硅酸乙酯 |
China National Standards Electron |
English PDF |
| GB/T 43976-2024 |
Electronic gas - tetrafluoromethane 电子气体-四氟甲烷 |
China National Standards Electron |
English PDF |
| GB/T 43977-2024 |
Electronic gas - octafluorocyclobutane 电子气体-八氟环丁烷 |
China National Standards Electron |
English PDF |
| GB/T 43993-2024 |
Urban Public Public facilities - Electronic fence system - operation specifications 城市公共设施-电子围网系统-运行规范 |
China National Standards Electron |
English PDF |
| GB/T 28893-2024 |
Surface chemical analysis-Auger Electron spectroscopy and X-ray photoelectron spectroscopy-methods for determining peak intensity and information required for reporting results 表面化学分析-俄歇电子能谱和X射线光电子能谱-测定峰强度的方法和报告结果所需的信息 |
China National Standards Electron |
English PDF |
| GB/T 28892-2024 |
Surface chemical analysis-X-ray photoElectron spectroscopy-selected instrument performance parameter statements 表面化学分析-X射线光电子能谱-选择仪器性能参数的表述 |
China National Standards Electron |
English PDF |
| GB/T 43800-2024 |
Marine electrical and Electronic equipment-electromagnetic compatibility-non-metallic ships 船舶电气与电子装置-电磁兼容性-非金属船舶 |
China National Standards Electron |
English PDF |
| GB/T 43711-2024 |
Electronic procurement transaction specifications - non-bidding method 电子采购交易规范-非招标方式 |
China National Standards Electron |
English PDF |
| GB/T 43773-2024 |
Electronic gas-carbonyl sulfide 电子气体-羰基硫 |
China National Standards Electron |
English PDF |
| GB/T 43772-2024 |
Electronic gas-carbon dioxide 电子气体-二氧化碳 |
China National Standards Electron |
English PDF |
| GB/T 43771-2024 |
Electronic gas-carbon monoxide 电子气体-一氧化碳 |
China National Standards Electron |
English PDF |
| GB/T 43748-2024 |
Microbeam analysis-Transmission Electron microscopy-Method for determination of thickness of functional thin film layers in integrated circuit chips 微束分析-透射电子显微术-集成电路芯片中功能薄膜层厚度的测定方法 |
China National Standards Electron |
English PDF |
| GB/T 43749-2024 |
Microbeam analysis - Electron probe microscopy - Quantitative analysis of anhydrous carbonate minerals Method 微束分析-电子探针显微分析-无水碳酸盐矿物的定量分析方法 |
China National Standards Electron |
English PDF |
| GB/T 43777-2024 |
Semiconductor devices - Part 5-7: OptoElectronic devices - Photodiodes and phototransistors 化妆品中功效组分虾青素的测定-高效液相色谱法 |
China National Standards Electron |
English PDF |
| GB/T 43789.31-2024 |
Electronic paper display devices - Part 3-2: Test methods for optoelectronic properties 电子纸显示器件-第3-1部分：光学性能测试方法 |
China National Standards Electron |
English PDF |
| GB/T 43789.11-2024 |
Electronic paper display devices - Part 3-1: Test methods for optical properties 电子纸显示器件-第1-1-部分：术语 |
China National Standards Electron |
English PDF |
| GB/T 43590.503-2024 |
Electric Electronic paper display devices - Part 1-1: Terminology 激光显示器件-第5-3-部分：激光投影显示（屏）图像质量测试方法 |
China National Standards Electron |
English PDF |
| GB/T 6346.1-2024 |
Fixed capacitors for Electronic equipment - Part 1: General specification 电子设备用固定电容器-第1部分：总规范 |
China National Standards Electron |
English PDF |
| GB/T 15651.5-2024 |
Semiconductor devices - Part 5-5: OptoElectronic devices - Optocouplers 半导体器件-第5-5部分：光电子器件-光电耦合器 |
China National Standards Electron |
English PDF |
| GB/T 4937.35-2024 |
Semiconductor devices - Mechanical and climatic test methods - Part 35: Acoustic microscopy of plastic encapsulated Electronic components 半导体器件-机械和气候试验方法-第35部分：塑封电子元器件的声学显微镜检查 |
China National Standards Electron |
English PDF |
| GB/T 43610-2023 |
Microbeam analysis Analytical Electron microscopy Transmission electron microscopy method for determination of apparent growth direction of linear crystals 微束分析 分析电子显微术 线状晶体表观生长方向的透射电子显微术测定方法 |
China National Standards Electron |
English PDF |
| GB/T 43598-2023 |
Nanotechnology Determination of oxygen content and carbon-to-oxygen ratio of graphene powder X-ray photoElectron spectroscopy 纳米技术 石墨烯粉体氧含量和碳氧比的测定 X射线光电子能谱法 |
China National Standards Electron |
English PDF |
| GB/T 43577.1-2023 |
Information Security Technology Electronic Discovery Part 1: Overview and Concepts 信息安全技术 电子发现 第1部分：概述和概念 |
China National Standards Electron |
English PDF |
| GB/T 43539-2023 |
Standards for Electronic document archiving and electronic archive management of government websites and webpages 政府网站网页电子文件归档和电子档案管理规范 |
China National Standards Electron |
English PDF |
| GB/T 43525-2023 |
Ships and offshore technology Navigation and ship maneuvering Electronic inclinometers 船舶与海上技术 导航和船舶操纵 电子倾斜仪 |
China National Standards Electron |
English PDF |
| GB/T 43495-2023 |
Application classification of radio frequency identification (RFID) Electronic tags for tires 轮胎用射频识别（RFID）电子标签应用分类 |
China National Standards Electron |
English PDF |
| GB/T 43494-2023 |
Radio frequency identification (RFID) Electronic tag encoding for tires 轮胎用射频识别（RFID）电子标签编码 |
China National Standards Electron |
English PDF |
| GB/T 43490-2023 |
Radio frequency identification (RFID) Electronic tags for tires 轮胎用射频识别（RFID）电子标签 |
China National Standards Electron |
English PDF |
| GB/T 31308.3-2023 |
Data elements, processes and documents in administration, commerce and industry Long-lasting signatures Part 3: Long-lasting signature specifications for PDF Advanced Electronic Signatures (PAdES) 行政、商业和行业中的数据元、过程和文档 长效签名 第3部分: PDF高级电子签名（PAdES）的长效签名规范 |
China National Standards Electron |
English PDF |
| GB/T 20818.22-2023 |
Industrial process measurement and control - Data structures and elements in process equipment catalogs - Part 22: List of properties (LOPs) for Electronic data exchange of valve body assemblies 工业过程测量和控制 过程设备目录中的数据结构和元素 第22部分：阀体总成电子数据交换用属性列表(LOPs) |
China National Standards Electron |
English PDF |
| GB/T 20818.16-2023 |
Industrial process measurement and control - Data structures and elements in process equipment catalogs - Part 16: List of properties (LOPs) for Electronic data exchange of density measuring equipment 工业过程测量和控制 过程设备目录中的数据结构和元素 第16部分：密度测量设备电子数据交换用属性列表(LOPs) |
China National Standards Electron |
English PDF |
| GB/T 19510.213-2023 |
Light source control devices Part 2-13: Special requirements for DC or AC Electronic control devices for LED modules 光源控制装置 第2-13部分：LED模块用直流或交流电子控制装置的特殊要求 |
China National Standards Electron |
English PDF |
| GB/T 19510.212-2023 |
Light source control devices Part 2-12: Special requirements for DC or AC Electronic ballasts for discharge lamps (other than fluorescent lamps) 光源控制装置 第2-12部分：放电灯（荧光灯除外）用直流或交流电子镇流器的特殊要求 |
China National Standards Electron |
English PDF |
| GB/T 19510.211-2023 |
Light source control devices Part 2-11: Special requirements for miscellaneous Electronic circuits used in conjunction with luminaires 光源控制装置 第2-11部分：与灯具联用的杂类电子线路的特殊要求 |
China National Standards Electron |
English PDF |
| GB/T 19510.207-2023 |
Light source control devices Part 2-7: Special requirements for Electronic control devices powered by safety service power supplies (ESSS) for emergency lighting (self-contained) 光源控制装置 第2-7部分：应急照明（自容式）用安全服务电源（ESSS）供电电子控制装置的特殊要求 |
China National Standards Electron |
English PDF |
| GB/T 19510.203-2023 |
Light source control devices Part 2-3: Special requirements for AC and/or DC Electronic control devices for fluorescent lamps 光源控制装置 第2-3部分：荧光灯用交流和/或直流电子控制装置的特殊要求 |
China National Standards Electron |
English PDF |
| GB/T 19510.202-2023 |
Light source control devices Part 2-2: Special requirements for DC/AC Electronic step-down converters for tungsten lamps 光源控制装置 第2-2部分：钨丝灯用直流/交流电子降压转换器的特殊要求 |
China National Standards Electron |
English PDF |
| GB/Z 41275.23-2023 |
Avionics Process Management Aerospace and Defense Electronic Systems Containing Lead-Free Solder Part 23: Rework/Repair Guidelines for Lead-Free and Mixed Electronics 航空电子过程管理 含无铅焊料航空航天及国防电子系统 第23部分：无铅及混装电子产品返工/修复指南 |
China National Standards Electron |
English PDF |
| GB/Z 41275.22-2023 |
Avionics Process Management Aerospace and Defense Electronic Systems Containing Lead-Free Solders Part 22: Technical Guide 航空电子过程管理 含无铅焊料航空航天及国防电子系统 第22部分：技术指南 |
China National Standards Electron |
English PDF |
| GB/Z 41275.4-2023 |
Avionics Process Management Aerospace and Defense Electronic Systems Containing Lead-Free Solder Part 4: Ball Grid Array Ball Installation 航空电子过程管理 含无铅焊料航空航天及国防电子系统 第4部分：球栅阵列植球 |
China National Standards Electron |
English PDF |
| GB/Z 41305.7-2023 |
Environmental conditions Vibration and shock of Electronic equipment Part 7: Transport by rotorcraft 环境条件 电子设备振动和冲击 第7部分：利用旋翼飞机运输 |
China National Standards Electron |
English PDF |
| GB 39800.7-2023 |
Specifications for Personal Protective Equipment Part 7: Electronics 个体防护装备配备规范 第7部分：电子 |
China National Standards Electron |
English PDF |
| GB/T 43369-2023 |
Interface requirements for optoElectronic mission load equipment for large and medium-sized civilian UAVs 民用大中型无人机光电任务载荷设备接口要求 |
China National Standards Electron |
English PDF |
| GB/T 43081-2023 |
Road vehicle bulbs and light sources - Dimensions, optoElectronic performance requirements 道路车辆灯泡和光源 尺寸、光电性能要求 |
China National Standards Electron |
English PDF |
| GB/T 43411-2023 |
Electron beam selective melting additive manufacturing machine tools general technical conditions 电子束选区熔化增材制造机床 通用技术条件 |
China National Standards Electron |
English PDF |
| GB/T 7724-2023 |
Electronic weighing instrument 电子称重仪表 |
China National Standards Electron |
English PDF |
| GB/T 19520.22-2023 |
Mechanical structures of electrical and Electronic equipment 482.6 mm (19 in) series mechanical structural dimensions Part 3-110: Residential racks and cabinets for smart homes 电气和电子设备机械结构 482.6 mm(19 in)系列机械结构尺寸 第3-110部分：智慧房屋用住宅机架和机柜 |
China National Standards Electron |
English PDF |
| GB/T 19520.21-2023 |
Mechanical Structure of Electrical and Electronic Equipment 482.6 mm (19 in) Series Mechanical Structure Dimensions Part 3-109: Chassis Dimensions of Embedded Computing Devices 电气和电子设备机械结构 482.6 mm(19 in)系列机械结构尺寸 第3-109部分：嵌入式计算设备的机箱尺寸 |
China National Standards Electron |
English PDF |
| GB/T 19520.20-2023 |
Mechanical structure of electrical and Electronic equipment 482.6 mm (19 in) series mechanical structural dimensions Part 3-108: Dimensions of R-type sub-boxes and plug-ins 电气和电子设备机械结构 482.6 mm(19 in)系列机械结构尺寸 第3-108部分：R型插箱和插件的尺寸 |
China National Standards Electron |
English PDF |
| GB/Z 40602.4-2023 |
Radio interference from antennas and receiving systems Part 4: Wireless receiving systems Electromagnetic compatibility test methods for Electronic equipment with integrated wireless modules 天线及接收系统的无线电干扰 第4部分：无线接收系统 集成无线模块电子设备电磁兼容测试方法 |
China National Standards Electron |
English PDF |
| GB/T 5169.34-2023 |
Fire hazard tests for electrical and Electronic products Part 34: Guidelines for fire hazard assessment Ignitability Summary and relevance of test methods 电工电子产品着火危险试验 第34部分：着火危险评定导则 起燃性 试验方法概要和相关性 |
China National Standards Electron |
English PDF |
| GB/T 5169.33-2023 |
Fire hazard test for electrical and Electronic products Part 33: Guidelines for fire hazard assessment Ignitability General principles 电工电子产品着火危险试验 第33部分： 着火危险评定导则 起燃性 总则 |
China National Standards Electron |
English PDF |
| GB/T 43196-2023 |
Nanotechnology Scanning Electron microscopy to measure nanoparticle size and shape distribution 纳米技术 扫描电子显微术测量纳米颗粒粒度及形状分布 |
China National Standards Electron |
English PDF |
| GB/T 43150-2023 |
Design and metrological characteristics of Electronic digital display indicators 电子数显指示表的设计和计量特性 |
China National Standards Electron |
English PDF |
| GB/T 43088-2023 |
Microbeam analysis Analytical Electron microscopy Method for determination of dislocation density in metallic thin crystal specimens 微束分析 分析电子显微术 金属薄晶体试样中位错密度的测定方法 |
China National Standards Electron |
English PDF |
| GB/T 43087-2023 |
Microbeam analysis Analytical Electron microscopy Method for determining interface position in cross-sectional images of layered materials 微束分析 分析电子显微术 层状材料截面像中界面位置的确定方法 |
China National Standards Electron |
English PDF |
| GB/T 43053-2023 |
Maritime navigation and radiocommunication equipment and systems Electronic Chart Display and Information Systems (ECDIS) Operational and performance requirements, test methods and required test results 海上导航和无线电通信设备及系统 电子海图显示与信息系统（ECDIS） 操作和性能要求、测试方法及要求的测试结果 |
China National Standards Electron |
English PDF |
| GB/T 43021-2023 |
Rework, modification and rework process requirements for Electronic assembly welding 电子组装件焊接的返工、改装和返修工艺要求 |
China National Standards Electron |
English PDF |
| GB/T 42977-2023 |
Nanotechnology Nano-optoElectronic display Optical reliability determination of quantum dot light conversion films 纳米技术 纳米光电显示 量子点光转换膜的光学可靠性测定 |
China National Standards Electron |
English PDF |
| GB/T 42971-2023 |
Information security technical requirements for third-party Electronic contract service platforms 第三方电子合同服务平台信息安全技术要求 |
China National Standards Electron |
English PDF |
| GB/T 33014.11-2023 |
Road vehicles - Test methods for immunity of electrical/Electronic components to narrowband radiated electromagnetic energy - Part 11: Reverberation chamber method 道路车辆 电气/电子部件对窄带辐射电磁能的抗扰性试验方法 第11部分：混响室法 |
China National Standards Electron |
English PDF |
| GB/T 25368-2023 |
Diesel engine Electronically controlled common rail system high-pressure fuel supply pump assembly 柴油机电控共轨系统 高压供油泵总成 |
China National Standards Electron |
English PDF |
| GB/T 16515-2023 |
Potentiometers for use in Electronic equipment - Part 5: Specifications for single-turn low-power wirewound and non-wirewound potentiometers 电子设备用电位器 第5部分:分规范 单圈旋转低功率线绕和非线绕电位器 |
China National Standards Electron |
English PDF |
| GB/T 15651.6-2023 |
Semiconductor devices Part 5-6: OptoElectronic devices Light emitting diodes 半导体器件 第5-6部分：光电子器件 发光二极管 |
China National Standards Electron |
English PDF |
| GB/T 42965.2-2023 |
Electronic invoice business data specifications Part 2: Specific elements 电子发票业务数据规范 第2部分：特定要素 |
China National Standards Electron |
English PDF |
| GB/T 42965.1-2023 |
Electronic invoice business data specifications Part 1: Basic elements 电子发票业务数据规范 第1部分：基本要素 |
China National Standards Electron |
English PDF |
| GB/T 42709.19-2023 |
Semiconductor devices MicroElectronic mechanical devices Part 19: Electronic compass 半导体器件 微电子机械器件 第19部分：电子罗盘 |
China National Standards Electron |
English PDF |
| GB/T 37977.51-2023 |
Electrostatics Part 5-1: Electrostatic protection of Electronic devices General requirements 静电学 第5-1部分:电子器件的静电防护 通用要求 |
China National Standards Electron |
English PDF |
| GB/T 42666-2023 |
Electronic dye liquid crystal dimming glass 电子染料液晶调光玻璃 |
China National Standards Electron |
English PDF |
| GB/T 42721-2023 |
Electronic special gas nitric oxide 电子特气 一氧化氮 |
China National Standards Electron |
English PDF |
| GB/T 42720-2023 |
Electronic special gas hexachlorodisilane 电子特气 六氯乙硅烷 |
China National Standards Electron |
English PDF |
| GB/T 20818.15-2023 |
Industrial process measurement and control - Data structures and elements in process equipment catalogs - Part 15: List of properties (LOPs) for Electronic data exchange of level measuring equipment 工业过程测量和控制 过程设备目录中的数据结构和元素 第15部分：物位测量设备电子数据交换用属性列表(LOPs) |
China National Standards Electron |
English PDF |
| GB/T 20818.14-2023 |
Industrial process measurement and control - Data structures and elements in process equipment catalogs - Part 14: List of properties (LOP) for Electronic data exchange of temperature measuring equipment 工业过程测量和控制 过程设备目录中的数据结构和元素 第14部分：温度测量设备电子数据交换用属性列表(LOP) |
China National Standards Electron |
English PDF |
| GB/T 20818.13-2023 |
Industrial process measurement and control. Data structures and elements in process equipment catalogs. Part 13: List of properties (LOP) for Electronic data exchange of pressure measuring equipment. 工业过程测量和控制 过程设备目录中的数据结构和元素 第13部分：压力测量设备电子数据交换用属性列表（LOP） |
China National Standards Electron |
English PDF |
| GB/T 42744-2023 |
Microwave circuit Electronically adjustable attenuator test method 微波电路 电调衰减器测试方法 |
China National Standards Electron |
English PDF |
| GB/T 10593.2-2023 |
Measurement methods for environmental parameters of electrical and Electronic products Part 2: Salt spray 电工电子产品环境参数测量方法 第2部分：盐雾 |
China National Standards Electron |
English PDF |
| GB/T 42727-2023 |
Specifications for Electronic filing of government service items 政务服务事项电子文件归档规范 |
China National Standards Electron |
English PDF |
| GB/T 42723-2023 |
International trade business process specification Electronic international road freight transport consignment note 国际贸易业务流程规范 电子国际公路货物运输托运单 |
China National Standards Electron |
English PDF |
| GB/T 42589-2023 |
Information Security Technology Electronic Credential Service Security Specifications 信息安全技术 电子凭据服务安全规范 |
China National Standards Electron |
English PDF |
| GB/T 42517.2-2023 |
Intelligent transportation system - Electronic road map data model and representation for intelligent driving - Part 2: Open road 智能运输系统 智能驾驶电子道路图数据模型与表达 第2部分：开放道路 |
China National Standards Electron |
English PDF |
| GB/T 42808-2023 |
Technical Requirements for Electronic Data Interchange of Port-Sea-Rail Combined Transport 港口海铁联运电子数据交换技术要求 |
China National Standards Electron |
English PDF |
| GB/T 42706.5-2023 |
Electronic components - Long term storage of semiconductor devices - Part 5: Chips and wafers 电子元器件 半导体器件长期贮存 第5部分：芯片和晶圆 |
China National Standards Electron |
English PDF |
| GB/T 42706.2-2023 |
Electronic components - Long-term storage of semiconductor devices - Part 2: Degradation mechanisms 电子元器件 半导体器件长期贮存 第2部分：退化机理 |
China National Standards Electron |
English PDF |
| GB/T 42706.1-2023 |
Electronic components - Long term storage of semiconductor devices - Part 1: General 电子元器件 半导体器件长期贮存 第1部分：总则 |
China National Standards Electron |
English PDF |
| GB/T 42517.1-2023 |
Intelligent transportation system - Electronic road map data model and representation for intelligent driving - Part 1: Closed roads 智能运输系统 智能驾驶电子道路图数据模型与表达 第1部分：封闭道路 |
China National Standards Electron |
English PDF |
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