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 5166-1998 Sintered metal materials and hardmetals--Determination of Young’s modulus
    烧结金属材料和硬质合金弹性模量测定
    China National Standards
    and

    English PDF
    GB/T 17627.2-1998 High-voltage test techniques for low voltage equipment--Part 2:Measuring system and test equipment
    低压电气设备的高电压试验技术 第二部分:测量系统和试验设备
    China National Standards
    and

    English PDF
    GB/T 17627.1-1998 High-voltage test techniques for low voltage equipment--Part 1:Definitions,test and procedure requirements
    低压电气设备的高电压试验技术 第一部分:定义和试验要求
    China National Standards
    and

    English PDF
    GB/T 17626.10-1998 Electromagnetic compatibility--Testing and measurement techniques--Damped oscillatory magnetic field immunity test
    电磁兼容 试验和测量技术 阻尼振荡磁场抗扰度试验
    China National Standards
    and

    English PDF
    GB/T 17624.1-1998 Electromagnetic compatibility--General--Application and interpretation of fundamental definitions and terms
    电磁兼容 综述 电磁兼容基本术语和定义的应用与解释
    China National Standards
    and

    English PDF
    GB/T 17619-1998 Limits and methods of testing for immunity of electrical/electronic sub-assemblies in vehicles to electromagnetic radiation
    机动车电子电器组件的电磁辐射抗扰性限值和测量方法
    China National Standards
    and

    English PDF
    GB/T 17618-1998 Information technology equipment--Immunity characteristics--Limits and methods of measurement
    信息技术设备抗扰度限值和测量方法
    China National Standards
    and

    English PDF
    GB 12319-1998 Symbols,abbreviations and terms used on Chinese charts
    中国海图图式
    China National Standards
    and

    English PDF
    GB/T 17645.31-1998 Industrial automation systems and integration--Parts library--Part 31:Implementation resources:Geometric programming interface
    工业自动化系统与集成 零件库 第31部分:实现资源:几何编程接口
    China National Standards
    and

    English PDF
    GB/T 17617-1998 Refractory products--Sampling of raw materials and unshaped products
    耐火原料和不定形耐火材料 取样
    China National Standards
    and

    English PDF
    GB/T 17611-1998 Measurement of fluid flow in closed conduits--Vocabulary and symbols
    封闭管道中流体流量的测量 术语和符号
    China National Standards
    and

    English PDF
    GB/T 17605-1998 Petroleum andliquid petroleum products--Volumetric calibration of horizontal cylindrical metal tanks(Manual methods)
    石油和液体石油产品 卧式圆筒形金属油罐容积标定法(手工法)
    China National Standards
    and

    English PDF
    GB/T 17604-1998 Rubber--Recommendations for the workmanship of pipe joint rings--Description and classification of imperfections
    橡胶 管道接口用密封圈制造质量的建议 疵点分类与类别
    China National Standards
    and

    English PDF
    GB/T 12583-1998 Standard test method for measurement of extreme-pressure properties of lubricating fluids(four-ball method)
    润滑剂极压性能测定法(四球法)
    China National Standards
    and

    English PDF
    GB/T 17600.1-1998 Steel--Conversion of elongation values--Part 1:Carbon and low alloy steels
    钢的伸长率换算 第1部分:碳素钢和低合金钢
    China National Standards
    and

    English PDF
    GB/T 15970.5-1998 Corrosion of metals and alloys--Stress corrosion testing--Part 5:Preparation and useof C-ring specimens
    金属和合金的腐蚀 应力腐蚀试验 第5部分:C型环试样的制备和应用
    China National Standards
    and

    English PDF
    GB/T 8431-1998 Textiles--Tests for colour fastness--Detection and assessment of photochromism
    纺织品 色牢度试验 光致变色的检验和评定
    China National Standards
    and

    English PDF
    GB/T 2481.1-1998 Bonded abrasives--Determination and designation of grain size distribution--Part 1:Macrogrits F4 to F220
    固结磨具用磨料 粒度组成的检测和标记 第1部分:粗磨粒 F4~F220
    China National Standards
    and

    English PDF
    GB/T 17587.3-1998 Ball screws--Part 3:Acceptance conditions and acceptance tests
    滚珠丝杠副 第3部分:验收条件和验收检验
    China National Standards
    and

    English PDF
    GB/T 17587.2-1998 Ball screws--Part2:Nominal diameters and nominal leads--Metric series
    滚珠丝杠副 第2部分:公称直径和公称导程 公制系列
    China National Standards
    and

    English PDF
    GB/T 17587.1-1998 Ball screws--Part 1:Vocabulary and designation
    滚珠丝杠副 第1部分:术语和符号
    China National Standards
    and

    English PDF
    GB/T 8554-1998 Transformers and inductors for use in electronic and telecommunication equipment--Measuring methodsand test procedures
    电子和通信设备用变压器和电感器 测量方法及试验程序
    China National Standards
    and

    English PDF
    GB/T 17562.1-1998 Rectangular connectors for frequencies below 3 MHz--Part 1: Generic specification--General requirements and guide for the preparation of detail specifications for connectors with assessed quality
    频率低于3 MHz的矩形连接器 第1部分 总规范 一般要求和编制有质量评定要求的连接器详细规范的导则
    China National Standards
    and

    English PDF
    GB/T 9535-1998 Crystalline silicon terrestrial photovoltaic (PV) modules-design qualification and type approval
    地面用晶体硅光伏组件 设计鉴定和定型
    China National Standards
    and

    English PDF
    GB/T 9424-1998 Semiconductor devices--Integrated circuits--Part 2:Digital integrated circuits--Section Five:Blank detail specification for complementary MOS digital inte-grated circuits,series 4000B and 4000UB
    半导体器件 集成电路 第2部分:数字集成电路 第五篇 CMOS数字集成电路4000B和4000UB系列空白详细规范
    China National Standards
    and

    English PDF
    GB/T 6351-1998 Semiconductor devices--Discrete devices--Part 2:Rectifier diodes--Section One:Blank detail specification for rectifier diodes(including avalanche recti fier diodes),ambient and case-rated,up to 100A
    半导体器件 分立器件 第2部分:整流二极管 第一篇 100A以下环境或管壳额定整流二极管(包括雪崩整流二极管)空白详细规范
    China National Standards
    and

    English PDF
    GB/T 6219-1998 Semiconductor devices--Discrete devices--Part 8:Field-effect transistors--Section One:Blank detail specification for single-gate field-effect transistors up to 5W and 1GHz
    半导体器件 分立器件 第8部分:场效应晶体管 第一篇 1 GHz、5 W以下的单栅场效应晶体管 空白详细规范
    China National Standards
    and

    English PDF
    GB/T 6217-1998 Semiconductor devices--Discrete devices--Part 7:Bipolar transistors--Section One:Blank detail speci-fication for ambient-rated bipolar transistors for low and high frequency amplification
    半导体器件 分立器件 第7部分:双极型晶体管 第一篇 高低频放大环境额定的双极型晶体管空白详细规范
    China National Standards
    and

    English PDF
    GB/T 17573-1998 Semiconductor devices--Discrete devices and integrated circuits--Part 1:General
    半导体器件 分立器件和集成电路 第1部分:总则
    China National Standards
    and

    English PDF
    GB/T 17572-1998 Semiconductor devices--Integrated circuits--Part 2:Digital integrated circuits--Section Four:Family specification for complementary MOS digital integrated circuits,series 4000B and 4000UB
    半导体器件 集成电路 第2部分:数字集成电路 第四篇 CMOS数字集成电路 4000B和4000UB系列族规范
    China National Standards
    and

    English PDF
    GB/T 17559-1998 Information technology--Telecommunications and information exchangebetween systems--26-Pole interface connector matchability dimensions andcontact number assignments
    信息技术 系统间远程通信和信息交换 26插针接口连接器配合性尺寸和接触件编号分配
    China National Standards
    and

    English PDF
    GB/T 17555-1998 Information technology--Computer graphics and image processing--Conformance testing of implementations of graphics standards
    信息技术 计算机图形与图像处理 图形标准实现的一致性测试
    China National Standards
    and

    English PDF
    GB/T 17550.3-1998 Identification cards--Optical memory cards--Linear recording method--Part 3:Optical properties and characteristics
    识别卡 光记忆卡 线性记录方法 第3部分:光属性和特性
    China National Standards
    and

    English PDF
    GB/T 17550.2-1998 Identification cards--Optical memory cards--Linear recording method--Part 2:Dimensions and location of the accessible optical area
    识别卡 光记忆卡 线性记录方法 第2部分:可访问光区域的尺寸和位置
    China National Standards
    and

    English PDF
    GB/T 17535-1998 Information technology--Telecommunications and information exchange between systems--Interface connector and contact assignments for ISDN basic access interface located at reference points S and T
    信息技术 系统间远程通信和信息交换 在S和T参考点上定位的ISDN基本接入接口用的接口连接器和接触件分配
    China National Standards
    and

    English PDF
    GB/T 17533.1-1998 Information technology--Open systems interconnection--Remote database access--Part 1:Generic model,service and protocol
    信息技术 开放系统互连 远程数据库访问 第1部分:类属模型、服务与协议
    China National Standards
    and

    English PDF
    GB/T 16720.4-1998 Industrial automation systems--Manufacturing message specification--Part 4:Companion standardfor numerical control
    工业自动化系统 制造报文规范 第4部分:数值控制用伴同标准
    China National Standards
    and

    English PDF
    GB/T 16656.201-1998 Industrial automation systems and integration--Product data representation and exchange--Part 201:Application protocol:Explicit draughting
    工业自动化系统与集成 产品数据表达与交换 第201部分:应用协议:显式绘图
    China National Standards
    and

    English PDF
    GB/T 15936.3-1998 Information technology--Open Document Architecture(ODA) and interchange format--Part 3:Abstract interface for the manipulation of ODA documents
    信息技术 开放文件体系结构(ODA)和交换格式 第3部分:ODA文件操纵的抽象界面
    China National Standards
    and

    English PDF
    GB/T 9872-1998 Rubber and rubber products--Determination of bromine and chlorine content--Oxygen flask combustion technique
    氧瓶燃烧法测定橡胶和橡胶制品中溴和氯的含量
    China National Standards
    and

    English PDF
    GB/T 9286-1998 Paints and varnishes--Cross cut test for films
    色漆和清漆 漆膜的划格试验
    China National Standards
    and

    English PDF
    GB/T 6753.4-1998 Paints and varnishes--Determination of flow time by use of flow cups
    色漆和清漆 用流出杯测定流出时间
    China National Standards
    and

    English PDF
    GB/T 6031-1998 Rubber,vulcanized or thermoplastic--Determination of hardness (hardness between 10IRHD and 100 IRHD)
    硫化橡胶或热塑性橡胶硬度的测定(10~100 IRHD)
    China National Standards
    and

    English PDF
    GB/T 17530.5-1998 Acrylic acid and acrylate esters for industrial use--Determination of monomethyl ether of hydroquinone
    工业丙烯酸及酯中阻聚剂的测定
    China National Standards
    and

    English PDF
    GB/T 17530.3-1998 Acrylic acid and acrylate esters for industrial use--Determination of color
    工业丙烯酸及酯色度的测定
    China National Standards
    and

    English PDF
    GB/T 6261-1998 Fixed capacitors for use in electronic equipment--Part 5:Sectional specification--Fixed mica dielectric d.c.capacitors witha rated voltage not exceeding 3000V--Selection of methods of test and generalrequirements
    电子设备用固定电容器 第5部分:分规范 额定电压不超过3000伏的直流云母介质固定电容器试验方法的选择和一般要求
    China National Standards
    and

    English PDF
    GB/T 8444-1998 Textiles--Testing method for colour fastness to metals in the dye-bath:Iron and copper
    纺织品 耐染浴中铁和铜金属色牢度试验方法
    China National Standards
    and

    English PDF
    GB/T 4470-1998 Analytical spectroscopic methods--Flame emission,atomic absorption and atomic fluorescence--Vocabulary
    火焰发射、原子吸收和原子荧光光谱分析法术语
    China National Standards
    and

    English PDF
    GB/T 17520-1998 Determination of solubility and solution stability of reactive dyes in the presence of electrolytes
    在电解质存在下反应染料溶解度和溶液稳定性的测定
    China National Standards
    and

    English PDF
    GB/T 2918-1998 Plastics--Standard atmospheres for conditioning and testing
    塑料试样状态调节和试验的标准环境
    China National Standards
    and

    English PDF
    GB/T 17516.2-1998 V-and ribbed belts drive--Dynamic test to determine pitch zone location--Part 2:V-ribbedbelts
    V带和多楔带传动 测定节面位置的动态试验方法 第2部分:多楔带
    China National Standards
    and

    English PDF
    GB/T 17516.1-1998 V-and ribbedbelts drive--Dynamic test to determine pitch zone location--Part 1:V-belts
    V带和多楔带传动 测定节面位置的动态试验方法 第1部分:V带
    China National Standards
    and

    English PDF
    GB 17513-1998 Realgar and orpiment
    雄黄矿 雌黄矿
    China National Standards
    and

    English PDF
    GB/T 2975-1998 Steel and steel products--Location and preparation of test pieces for mechanical testing
    钢及钢产品 力学性能试验取样位置及试样制备
    China National Standards
    and

    English PDF
    GB/T 17508-1998 Spectrochemical determination of samarium,euro-pium,gadolinium,dysprosium,cadmium and tantalum in uranium hexafluoride
    六氟化铀中钐、铕、钆、镝、镉、钽的测定 化学光谱法
    China National Standards
    and

    English PDF
    GB/T 17505-1998 Steel and steel products--General technicaldelivery requirements
    钢及钢产品交货一般技术要求
    China National Standards
    and

    English PDF
    GB/T 2837-1998 Measuring method for size and deviation of vitrified clay pipe
    陶管尺寸及偏差测量方法
    China National Standards
    and

    English PDF
    GB/T 17500-1998 Satellite earth stations(SES)--Receive-only very small aperture terminals(VSAT) used for data distribution operating in the 11/12 GHz frequency bands
    卫星地球站 工作在11/12 GHz频带下用于数据分配的只接收甚小口径终端(VSAT)技术要求
    China National Standards
    and

    English PDF
    GB 50285-1998 Standad for protection distance from highway to AM,FM and TV rebroadcast stations
    调幅收音台和调频电视转播台与公路的防护间距标准
    China National Standards
    and

    English PDF
    GB/T 17490-1998 Hydraulic fluid power--Identification of valve ports,subplates,control devices and solenoids
    液压控制阀 油口、底板、控制装置和电磁铁的标识
    China National Standards
    and

    English PDF
    GB/T 17487-1998 Hydraulic fluid power--Four-and five-port servovalves--Mounting surfaces
    四油口和五油口液压伺服阀 安装面
    China National Standards
    and

    English PDF
    GB/T 17485-1998 Hydraulic fluid power--Pumps,motors and integral transmissions--Parameter definitions and letter symbols
    液压泵、马达和整体传动装置参数定义和字母符号
    China National Standards
    and

    English PDF
    GB/T 17484-1998 Hydraulic fluid power--Fluid sample containers--Qualifying and controlling cleaning methods
    液压油液取样容器 净化方法的鉴定和控制
    China National Standards
    and

    English PDF
    GB/T 801-1998 Cup head square neck bolts with small head andshort neck--Product grade B
    小半圆头低方颈螺栓 B级
    China National Standards
    and

    English PDF
    GB/T 7631.15-1998 Lubricants and related products(class L)--Classification--Part 15:Family N (Insulating liquids)
    润滑剂和有关产品(L类)的分类 第15部分:N组(绝缘液体)
    China National Standards
    and

    English PDF
    GB/T 7631.14-1998 Lubricants and related products(class L)--Classification--Part 14:Family U (Heat treatment)
    润滑剂和有关产品(L类)的分类 第14部分:U组(热处理)
    China National Standards
    and

    English PDF
    GB/T 17476-1998 Standard test method for determination of additiveelements,wear metals,and contaminants in used lubricanting oils and determination of selected elements in base oils by inductively coupled plasmaatomic emission spectrometry(ICP-AES)
    使用过的润滑油中添加剂元素、磨损金属和污染物以及基础油中某些元素测定法(电感耦合等离子体发射光谱法)
    China National Standards
    and

    English PDF
    GB/T 17475-1998 Standard test method for distillation of heavy hydrocarbon mixtures(Vacuum potstill method)
    重烃类混合物蒸馏试验方法(真空釜式蒸馏法)
    China National Standards
    and

    English PDF
    GB/T 17474-1998 Standard test method for benzene inhydrocarbon solvents by gas chromatography
    烃类溶剂中苯含量测定法(气相色谱法)
    China National Standards
    and

    English PDF
    GB/T 17471-1998 Principles for providing of monitoring and measuring instruments of energy in boiler heating network system
    锅炉热网系统能源监测与计量仪表配备原则
    China National Standards
    and

    English PDF
    GB/T 17463-1998 Telecontrol equipment and systems--Part 4:Performance requirements
    远动设备及系统 第4部分:性能要求
    China National Standards
    and

    English PDF
    GB/T 15153.1-1998 Telecontrol equipment and systems--Part 2:Operating conditions--Section 1:Power supply and electromagnetic compatibility
    远动设备及系统 第2部分:工作条件 第1篇:电源和电磁兼容性
    China National Standards
    and

    English PDF
    GB/T 50280-1998 Standard for basic terminology of urban planning
    城市规划基本术语标准
    China National Standards
    and

    English PDF
    GB/T 305-1998 Rolling bearings--Snap ring groove and snap ring on outer ring--Dimensions and tolerances
    滚动轴承 外圈上的止动槽和止动环 尺寸和公差
    China National Standards
    and

    English PDF
    GB/T 17452-1998 Technical drawings--General principles of presentation--Sections and cuts
    技术制图 图样画法 剖视图和断面图
    China National Standards
    and

    English PDF
    GB/T 6232-1998 Tractors and machinery for agriculture and forestry--Wheel-to-hub fixing dimensions
    农林拖拉机和机械车轮在轮毂上安装尺寸
    China National Standards
    and

    English PDF
    GB/T 17127.3-1998 Agricultural wheeled tractors and implements--Three-point hitch couplers--Part 3:Link coupler
    农业轮式拖拉机和机具 三点悬挂挂接器 第3部分:连杆式挂接器
    China National Standards
    and

    English PDF
    GB/T 17127.1-1998 Agricultural wheeled tractors and implements--Three-point hitch couplers--Part 1:U-frame coupler
    农业轮式拖拉机和机具 三点悬挂挂接器 第1部分:U型框架式挂接器
    China National Standards
    and

    English PDF
    GB/T 8993-1998 Environmental conditions and testing procedures for nuclear instrumentation
    核仪器环境条件与试验方法
    China National Standards
    and

    English PDF
    GB/T 17438-1998 Technical requirements for the transmission through contribution and primary distribution networks of digital television signals defined according to the 4∶2∶2 standard
    由4∶2∶2标准定义的数字电视信号馈送和一次分配网络传输技术要求
    China National Standards
    and

    English PDF
    GB/T 17435-1998 Design and installation of electrolysisof seawater anti-fouling system for ship
    船用电解海水防污装置设计和安装
    China National Standards
    and

    English PDF
    GB/T 7676.9-1998 Direct acting indicating analogue electrical measuring instruments and their accessories--Part 9:Recom-mended test methods
    直接作用模拟指示电测量仪表及其附件 第9部分:推荐的试验方法
    China National Standards
    and

    English PDF
    GB/T 7676.8-1998 Direct acting indicating analogue electrical measuring instruments and their accessories--Part 8:Special requirements for accessories
    直接作用模拟指示电测量仪表及其附件 第8部分:附件的特殊要求
    China National Standards
    and

    English PDF
    GB/T 7676.7-1998 Direct acting indicating analogue electrical measuring instruments and their accessories--Part 7:Special requirements for multi-function instruments
    直接作用模拟指示电测量仪表及其附件 第7部分:多功能仪表的特殊要求
    China National Standards
    and

    English PDF
    GB/T 7676.6-1998 Direct acting indicating analogue electrical measuring instruments and their accessories--Part 6:Special requirements for ohmmeters(impedance meters) and conductance meters
    直接作用模拟指示电测量仪表及其附件 第6部分:电阻表(阻抗表)和电导表的特殊要求
    China National Standards
    and

    English PDF
    GB/T 7676.5-1998 Direct acting indicating analogue electrical measuring instruments and their accessories--Part 5:Special requirements for phase meters,power factor meters and synchroscopes
    直接作用模拟指示电测量仪表及其附件 第5部分:相位表、功率因数表和同步指示器的特殊要求
    China National Standards
    and

    English PDF
    GB/T 7676.4-1998 Direct acting indicating analogue electrical measuring instruments and their accessories--Part 4:Special requirements for frequency meters
    直接作用模拟指示电测量仪表及其附件 第4部分:频率表的特殊要求
    China National Standards
    and

    English PDF
    GB/T 7676.3-1998 Direct acting indicating analogue electrical measuring instruments and their accessories--Part 3:Special requirements for wattmeters and varmeters
    直接作用模拟指示电测量仪表及其附件 第3部分:功率表和无功率表的特殊要求
    China National Standards
    and

    English PDF
    GB/T 7676.2-1998 Direct acting indicating analogue electrical measuring instruments and their accessories--Part 2:Special requirements for ammeters and voltmeters
    直接作用模拟指示电测量仪表及其附件 第2部分:电流表和电压表的特殊要求
    China National Standards
    and

    English PDF
    GB/T 7676.1-1998 Direct acting indicating analogue electrical measuring instruments and their accessories--Part 1:Definition and general requirements common to all parts
    直接作用模拟指示电测量仪表及其附件 第1部分:定义和通用要求
    China National Standards
    and

    English PDF
    GB/T 17442-1998 Acceptance inspection fordirect connected alternating current static watt-hour meters for active energy (classes 1 and 2)
    1级和2级直接接入静止式交流有功电度表验收检验
    China National Standards
    and

    English PDF
    GB/T 8656-1998 Styrene-butadiene rubber(SBR)--Emulsion and solution-polymerized types--Evaluation procedures
    乳液和溶液聚合型苯乙烯-丁二烯橡胶(SBR)评价方法
    China National Standards
    and

    English PDF
    GB/T 6594.1-1998 Polystyrene (PS) moulding and extrusion materials--Part 1:Designation system and basis for specifications
    聚苯乙烯(PS)模塑和挤出材料 第1部分:命名系统和分类基础
    China National Standards
    and

    English PDF
    GB/T 17426-1998 Dynamic performance evaluation and test method for particular class vehicles and tracked machine
    铁道特种车辆和轨行机械动力学性能 评定及试验方法
    China National Standards
    and

    English PDF
    GB/T 17412.3-1998 Classification and nomenclature schemes of the rocks--Classification and nomenclature schemes of metamorphic rocks
    岩石分类和命名方案 变质岩岩石的分类和命名方案
    China National Standards
    and

    English PDF
    GB/T 17412.2-1998 Classification and namenclature schemes of the rocks--Classification and namenclature schemes of sedimentary rock
    岩石分类和命名方案 沉积岩岩石分类和命名方案
    China National Standards
    and

    English PDF
    GB/T 17412.1-1998 Classification and namenclature schemes of the rocks--Classification and namenclature schemes of igneous rock
    岩石分类和命名方案 火成岩岩石分类和命名方案
    China National Standards
    and

    English PDF
    GB/T 17391-1998 Test method for thermal stability of polyethylene pipes and fittings
    聚乙烯管材与管件热稳定性试验方法
    China National Standards
    and

    English PDF
    GB/T 17387-1998 Recommended practice for the operation,maintenance and troubleshooting of electric submersible pump installations
    潜油电泵装置的操作、维护和故障检查
    China National Standards
    and

    English PDF
    GB/T 17385-1998 Shipbuilding--Principal ship dimensions--Termin-ology and definitions for computer application
    造船 船舶主尺度 计算机应用的术语及定义
    China National Standards
    and

    English PDF

    Find out:22977Items   |  To Page of: First -Previous-Next -Last  | [207] [208] [209] [210] [211] [212] [213]

     

    +86-755-25831330        sales@gbstandards.org 
    106# Zhongmao Mansion,No.1 Beizhan Road,Shenzhen,China
    ©  RJS Copyright  2001-2024 All Rights Reserved

    - Since 2001 -
    Focus on China Standards & Compliance Services

    www.rjs.cn

    China Licenses

    www.transcustoms.com

    China HS code & Tariff

    www.gbstandards.org

    China National Standards