China National Standards

China C 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 "C" GB Standards English PDF List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 23368.2-2009 Methods for Chemical analysis of ammonium metatungstate - Part 2: Determination of zinc content - Flame atomic absorption spectrometry
    偏钨酸铵化学分析方法 第2部分:锌量的测定 火焰原子吸收光谱法
    China National Standards
    C

    English PDF
    GB/T 23368.1-2009 Methods for Chemical analysis of ammonium metatungstate - Part 1: Determination of water insoluble content - Gravimetric analysis
    偏钨酸铵化学分析方法 第1部分:水不溶物量的测定 称量法
    China National Standards
    C

    English PDF
    GB/T 23367.2-2009 Methods for Chemical analysis of lithium cobalt oxide - Part 2: Determination of lithium,nickel,manganese,magnesium,aluminium,iron,sodium,calcium and copper content - Inductively coupled plasma atomic emission spectrometry
    钴酸锂化学分析方法 第2部分:锂、镍、锰、镁、铝、铁、钠、钙和铜量的测定 电感耦合等离子体原子发射光谱法
    China National Standards
    C

    English PDF
    GB/T 23367.1-2009 Methods for Chemical analysis of lithium cobalt oxide - Part 1: Determination of cobalt content - EDTA titration
    钴酸锂化学分析方法 第1部分:钴量的测定 EDTA滴定法
    China National Standards
    C

    English PDF
    GB/T 23366-2009 EleCtrochemical performance test of lithium cobalt oxide - Test method for discharge plateau capacity ratio and cycle life
    钴酸锂电化学性能测试 放电平台容量比率及循环寿命测试方法
    China National Standards
    C

    English PDF
    GB/T 23365-2009 EleCtrochemical performance test of lithium cobalt oxide - Test method for specific capacity and charge-discharge efficiency of the first cycle
    钴酸锂电化学性能测试 首次放电比容量及首次充放电效率测试方法
    China National Standards
    C

    English PDF
    GB/T 23364.6-2009 Methods for Chemical analysis of high purity indium oxide - Part 6: Determination of the loss on ignition - Gravimetric analysis
    高纯氧化铟化学分析方法 第6部分:灼减量的测定 称量法
    China National Standards
    C

    English PDF
    GB/T 23364.5-2009 Methods for Chemical analysis of high purity indium oxide - Part 5: Determination of chlorine content - Mercuric sulfocyanide spectrophotometry
    高纯氧化铟化学分析方法 第5部分:氯量的测定 硫氰酸汞分光光度法
    China National Standards
    C

    English PDF
    GB/T 23364.4-2009 Methods for Chemical analysis of high purity indium oxide - Part 4: Determination of aluminum, iron, copper, zinc, cadmium, lead and thallium content - Inductively coupled plasma mass spectrometry
    高纯氧化铟化学分析方法 第4部分:铝、铁、铜、锌、镉、铅和铊量的测定 电感耦合等离子体质谱法
    China National Standards
    C

    English PDF
    GB/T 23364.3-2009 Methods for Chemical analysis of high purity indium oxide - Part 3: Determination of antimony content - Atomic fluorescence spectrometry
    高纯氧化铟化学分析方法 第3部分:锑量的测定 原子荧光光谱法
    China National Standards
    C

    English PDF
    GB/T 23364.2-2009 Methods for Chemical analysis of high purity indium oxide - Part 2: Determination of tin content - Phenylfluorone spectrophotometry
    高纯氧化铟化学分析方法 第2部分:锡量的测定 苯基荧光酮分光光度法
    China National Standards
    C

    English PDF
    GB/T 23364.1-2009 Methods for Chemical analysis of high purity indium oxide - Part 1: Determination of arsenic content - Atomic fluorescence spectrometry
    高纯氧化铟化学分析方法 第1部分:砷量的测定 原子荧光光谱法
    China National Standards
    C

    English PDF
    GB/T 23362.6-2009 Methods for Chemical analysis of high purity indium hydroxide - Part 6: Determination of the loss on ignition - Gravimetric analysis
    高纯氢氧化铟化学分析方法 第6部分:灼减量的测定 称量法
    China National Standards
    C

    English PDF
    GB/T 23362.5-2009 Methods for Chemical analysis of high purity indium hydroxide - Part 5: Determination of chlorine content - Mercuric sulfocyanide spectrophotometry
    高纯氢氧化铟化学分析方法 第5部分:氯量的测定 硫氰酸汞分光光度法
    China National Standards
    C

    English PDF
    GB/T 23362.4-2009 Methods for Chemical analysis of high purity indium hydroxide - Part 4: Determination of aluminum, iron, copper, zinc, cadmium, lead and thallium content - Inductively coupled plasma mass spectrometry
    高纯氢氧化铟化学分析方法 第4部分:铝、铁、铜、锌、镉、铅和铊量的测定 电感耦合等离子体质谱法
    China National Standards
    C

    English PDF
    GB/T 23362.3-2009 Methods for Chemical analysis of high purity indium hydroxide - Part 3: Determination of antimony content - Atomic fluorescence spectrometry
    高纯氢氧化铟化学分析方法 第3部分:锑量的测定 原子荧光光谱法
    China National Standards
    C

    English PDF
    GB/T 23362.2-2009 Methods for Chemical analysis of high purity indium hydroxide - Part 2: Determination of tin content - Phenylfluorone spectrophotometry
    高纯氢氧化铟化学分析方法 第2部分:锡量的测定 苯基荧光酮分光光度法
    China National Standards
    C

    English PDF
    GB/T 23362.1-2009 Methods for Chemical analysis of high purity indium hydroxide - Part 1: Determination of arsenic content - Atomic fluorescence spectrometry
    高纯氢氧化铟化学分析方法 第1部分:砷量的测定 原子荧光光谱法
    China National Standards
    C

    English PDF
    GB/T 23330-2009 Clothing - Requirement of protection against rain
    服装 防雨性能要求
    China National Standards
    C

    English PDF
    GB/T 23329-2009 Textiles - Determination of drapability of fabriCs
    纺织品 织物悬垂性的测定
    China National Standards
    C

    English PDF
    GB/T 23326-2009 Stainless steel fibers and Cotton-polyester blended grey fabric with electromagnetic shielding performance
    不锈钢纤维与棉涤混纺电磁波屏蔽本色布
    China National Standards
    C

    English PDF
    GB/T 23325-2009 Textiles - Determination of surfaCtant - Linear alkylbenzene sulfonates
    纺织品 表面活性剂的测定 线性烷基苯磺酸盐
    China National Standards
    C

    English PDF
    GB/T 23324-2009 Textiles - Determination of surfaCtant - Distearyl dimethyl ammonium chloride
    纺织品 表面活性剂的测定 二硬脂基二甲基氯化铵
    China National Standards
    C

    English PDF
    GB/T 23323-2009 Textiles - Determination of surfaCtant - Ethylene diamine tetra acetate and diethylene triamine penta acetate
    纺织品 表面活性剂的测定 乙二胺四乙酸盐和二乙烯三胺五乙酸盐
    China National Standards
    C

    English PDF
    GB/T 23322-2009 Textiles - Determination of surfaCtant - Alkylphenol ethoxylates
    纺织品 表面活性剂的测定 烷基酚聚氧乙烯醚
    China National Standards
    C

    English PDF
    GB/T 23321-2009 Textiles - Water resistanCe - Rain tests: Exposure to a horizontal water spray
    纺织品 防水性 水平喷射淋雨试验
    China National Standards
    C

    English PDF
    GB/T 23320-2009 Textiles - Determination of resistanCe to water absorption - Tumble-jar absorption test
    纺织品 抗吸水性的测定 翻转吸收法
    China National Standards
    C

    English PDF
    GB/T 23319.2-2009 Textiles - Determination of spirality after laundering - Part 2: Woven and knitted fabriCs
    纺织品 洗涤后扭斜的测定 第2部分:机织物和针织物
    China National Standards
    C

    English PDF
    GB/T 23319.1-2009 Textiles - Determination of spirality after laundering - Part 1: PerCentage of wale spirality change in knitted garments
    纺织品 洗涤后扭斜的测定 第1部分:针织服装纵行扭斜的变化
    China National Standards
    C

    English PDF
    GB/T 23318-2009 Textiles - Determination of resistanCe to puncture
    纺织品 刺破强力的测定
    China National Standards
    C

    English PDF
    GB/T 23317-2009 SpeCification for clothing made from coated fabrics for protection against wet weather
    涂层服装抗湿技术要求
    China National Standards
    C

    English PDF
    GB/T 23316-2009 Anti-statiC requirement and test methods of working clothing
    工作服 防静电性能的要求及试验方法
    China National Standards
    C

    English PDF
    GB/T 23315-2009 TouCh and close fasteners
    粘扣带
    China National Standards
    C

    English PDF
    GB/T 23314-2009 NeCkties
    领带
    China National Standards
    C

    English PDF
    GB/T 19981.4-2009 Textiles - Professional Care, drycleaning and wetcleaning of fabrics and garments - Part 4: Procedure for testing performance when cleaning and finishing using simulated wetcleaning
    纺织品 织物和服装的专业维护、干洗和湿洗 第4部分:使用模拟湿清洗和整烫时性能试验的程序
    China National Standards
    C

    English PDF
    GB/T 19981.3-2009 Textiles - Professional Care, drycleaning and wetcleaning of fabrics and garments - Part 3: Procedure for testing performance when cleaning and finishing using hydrocarbon solvent
    纺织品 织物和服装的专业维护、干洗和湿洗 第3部分:使用烃类溶剂干洗和整烫时性能试验的程序
    China National Standards
    C

    English PDF
    GB/T 1335.3-2009 Standard sizing systems for garments - Children
    服装号型 儿童
    China National Standards
    C

    English PDF
    GB/T 12704.2-2009 Textiles - Test method for water-vapour transmission of fabriCs - Part 2: Water method
    纺织品 织物透湿性试验方法 第2部分:蒸发法
    China National Standards
    C

    English PDF
    GB/T 12704.1-2009 Textiles - Test method for water-vapour transmission of fabriCs - Part 1: Desiccant method
    纺织品 织物透湿性试验方法 第1部分:吸湿法
    China National Standards
    C

    English PDF
    GB/T 11101-2009 Cemented carbide blanks for round rods
    硬质合金圆棒毛坯
    China National Standards
    C

    English PDF
    GB/T 50485-2009 TeChnical code for microirrigation engineering
    微灌工程技术规范
    China National Standards
    C

    English PDF
    GB/T 9334-2009 EleCtrical installation in ships - Shipboard telecommunication cables and radio-frequency cables - Shipboard flexible coaxial cables
    船舶电气设备 船用通信电缆和射频电缆 船用同轴软电缆
    China National Standards
    C

    English PDF
    GB/T 9333-2009 EleCtrical installation in ships - Shipboard telecommunication cables and radio-frequency cables - General instrumentation, control and communication cables
    船舶电气设备 船用通信电缆和射频电缆 一般仪表、控制和通信电缆
    China National Standards
    C

    English PDF
    GB/T 5584.4-2009 ReCtangular copper or aluminuium and its alloy wires for electrical purposes - Part 4: Strip copper conductor
    电工用铜、铝及其合金扁线 第4部分:铜带
    China National Standards
    C

    English PDF
    GB/T 5584.3-2009 ReCtangular copper or aluminium and its alloy wires for electrical purposes - Part 3: Aluminium rectanglar wire
    电工用铜、铝及其合金扁线 第3部分:铝扁线
    China National Standards
    C

    English PDF
    GB/T 5584.2-2009 ReCtangular copper or aluminium and its alloy wires for electrical purposes - Part 2: Rectangular copper wire
    电工用铜、铝及其合金扁线 第2部分:铜扁线
    China National Standards
    C

    English PDF
    GB/T 5584.1-2009 ReCtangular copper or aluminium and its alloy wires for electrical purposes - Part 1: General
    电工用铜、铝及其合金扁线 第1部分:一般规定
    China National Standards
    C

    English PDF
    GB/T 4910-2009 Tinned round Copper wire
    镀锡圆铜线
    China National Standards
    C

    English PDF
    GB/T 4909.9-2009 Test methods for bare wires - Part 9: Test for Continuity of coating - Sodium polysulfide solution method
    裸电线试验方法 第9部分:镀层连续性试验 多硫化钠法
    China National Standards
    C

    English PDF
    GB/T 4909.12-2009 Test methods for bare wires - Part 12: Solderability test of Coating - Solder globule method
    裸电线试验方法 第12部分:镀层可焊性试验-焊球法
    China National Standards
    C

    English PDF
    GB/T 4909.11-2009 Test methods for bare wires - Part 11: Test for adherenCe of coating
    裸电线试验方法 第11部分:镀层附着性试验
    China National Standards
    C

    English PDF
    GB/T 4909.10-2009 Test methods for bare wires - Part 10: Test for Continuity of coating - Ammonium persulphate solution method
    裸电线试验方法 第10部分:镀层连续性试验 过硫酸铵法
    China National Standards
    C

    English PDF
    GB/T 4074.8-2009 Winding wires - Test methods - Part 8: Test proCedure for the determination of the temperature index of enamelled winding wires - Quick-Test method
    绕组线试验方法 第8部分:测定漆包绕组线温度指数的试验方法 快速法
    China National Standards
    C

    English PDF
    GB/T 4074.7-2009 Winding wires - Test methods - Part 7: Test proCedure for the determination of the temperature index of enamelled winding wires
    绕组线试验方法 第7部分:测定漆包绕组线温度指数的试验方法
    China National Standards
    C

    English PDF
    GB/T 3955-2009 Round aluminium wire for eleCtrical purposes
    电工圆铝线
    China National Standards
    C

    English PDF
    GB/T 3953-2009 Round Copper wire for electrical purposes
    电工圆铜线
    China National Standards
    C

    English PDF
    GB/T 23360-2009 Method of evaluating the thermal performanCe of enclosures
    机壳热特性的估算方法
    China National Standards
    C

    English PDF
    GB/T 23359-2009 Frame-type Cabinets for low-voltage switchgear
    框架式低压机柜
    China National Standards
    C

    English PDF
    GB/T 23312.7-2009 Enamelled round aluminium winding wire - Part 7: Polyester or polyesterimide overCoated with polyamide-imide enamelled round aluminium wire, class 200
    漆包铝圆绕组线 第7部分:200级聚酯或聚酯亚胺/聚酰胺酰亚胺复合漆包铝圆线
    China National Standards
    C

    English PDF
    GB/T 23312.6-2009 Enamelled round aluminium winding wire - Part 6: Polyester or polyesterimide overCoated with polyamide enamelled round aluminium wire, class 180
    漆包铝圆绕组线 第6部分:180级聚酯或聚酯亚胺/聚酰胺复合漆包铝圆线
    China National Standards
    C

    English PDF
    GB/T 23312.5-2009 Enamelled round aluminium winding wire - Part 5: Polyesterimide enamelled round aluminium wire,Class 180
    漆包铝圆绕组线 第5部分:180级聚酯亚胺漆包铝圆线
    China National Standards
    C

    English PDF
    GB/T 23312.4-2009 Enamelled round aluminium winding wire - Part 4: Polyester enamelled round aluminium wire, Class 155
    漆包铝圆绕组线 第4部分:155级聚酯漆包铝圆线
    China National Standards
    C

    English PDF
    GB/T 23312.3-2009 Enamelled round aluminium winding wire - Part 3: Polyester enamelled round aluminium wire, Class 130
    漆包铝圆绕组线 第3部分:130级聚酯漆包铝圆线
    China National Standards
    C

    English PDF
    GB/T 23312.2-2009 Enamelled round aluminium winding wire - Part 2: Polyvinyl aCetal enamelled round aluminium wire, class 120
    漆包铝圆绕组线 第2部分:120级缩醛漆包铝圆线
    China National Standards
    C

    English PDF
    GB/T 23311-2009 AromatiC polyimide tape wrapped round copper wire, class 240
    240级芳族聚酰亚胺薄膜绕包铜圆线
    China National Standards
    C

    English PDF
    GB/T 23310-2009 AromatiC polyimide tape wrapped rectangular copper wire,class 240
    240级芳族聚酰亚胺薄膜绕包铜扁线
    China National Standards
    C

    English PDF
    GB/T 23309-2009 Aluminium-magnesium alloy wires for shield in Cable
    电缆屏蔽用铝镁合金线
    China National Standards
    C

    English PDF
    GB/T 23308-2009 Aluminium-magnesium-siliCon alloy wire for overhead line conductors
    架空绞线用铝-镁-硅系合金圆线
    China National Standards
    C

    English PDF
    GB/T 23307-2009 Floor soCket-outlets for household and similar purposes
    家用和类似用途地面插座
    China National Standards
    C

    English PDF
    GB/T 23306-2009 SpeCifications for flameproof three-phase asynchronous motors for use on dispensers (frame size 63 to 100)
    燃油加油机用隔爆型三相异步电动机(机座号63~100)技术条件
    China National Standards
    C

    English PDF
    GB/T 23294-2009 Abrasion resistant refraCtory materials
    耐磨耐火材料
    China National Standards
    C

    English PDF
    GB/T 23293-2009 Nitride bonded refraCtory products and their mortars
    氮化物结合耐火制品及其配套耐火泥浆
    China National Standards
    C

    English PDF
    GB/T 19520.15-2009 MeChanical structures for electronic equipment - Dimensions of mechanical structures of the 482.6 mm (19 in) series - Part 3-104: Connector dependent interface dimensions of subracks and plug-in units
    电子设备机械结构 482.6mm(19in)系列机械结构尺寸 第3-104部分:基于连接器的插箱和插件的接口尺寸
    China National Standards
    C

    English PDF
    GB/T 19520.14-2009 MeChanical structures for electronic equipment - Dimensions of mechanical structures of the 482.6 mm (19 in) series - Part 3-103: Keying and alignment pin
    电子设备机械结构 482.6mm(19in)系列机械结构尺寸 第3-103部分:编码键和定位销
    China National Standards
    C

    English PDF
    GB/T 19520.13-2009 MeChanical structures for electronic equipment - Dimensions of mechanical structures of the 482.6 mm (19 in) series - Part 3-102: Injector/extractor handle
    电子设备机械结构 482.6mm(19in)系列机械结构尺寸 第3-102部分:插拔器手柄
    China National Standards
    C

    English PDF
    GB/T 19520.12-2009 MeChanical structures for electronic equipment - Dimensions of mechanical structures of the 482.6 mm (19 in) series - Part 3-101: Subracks and associated plug-in units
    电子设备机械结构 482.6mm(19in)系列机械结构尺寸 第3-101部分:插箱及其插件
    China National Standards
    C

    English PDF
    GB/T 19290.5-2009 Modular order for the development of meChanical structures for electronic equipment practices - Part 2-3: Sectional specification - Interface co-ordination dimensions for the 25mm equipment practice - Extended detail specification - Dimensions for subrack
    发展中的电子设备构体机械结构模数序列 第2-3部分:分规范 25mm设备构体的接口协调尺寸 扩展的详细规范 插箱、机箱、背板、面板和插件的尺寸
    China National Standards
    C

    English PDF
    GB/T 19290.4-2009 Modular order for the development of meChanical structures for electronic equipment practices - Part 2: Sectional specification - Interface co-ordination dimensions for the 25 mm equipment practice - Section 2: Detail specification - Dimensions for subrac
    发展中的电子设备构体机械结构模数序列 第2-2部分:分规范 25mm设备构体的接口协调尺寸 详细规范 插箱、机箱、背板、面板和插件的尺寸
    China National Standards
    C

    English PDF
    GB/T 17937-2009 Aluminium-Clad steel wires for electrical purposes
    电工用铝包钢线
    China National Standards
    C

    English PDF
    GB/T 17363.2-2009 NondestruCtive mensuration of gold content in the gold products - Part 2: Method of compositive determine
    黄金制品金含量无损测定方法 第2部分:综合测定方法
    China National Standards
    C

    English PDF
    GB/T 17363.1-2009 NondestruCtive mensuration of gold content in the gold products - Part 1: Method of electron probe microanalysis
    黄金制品金含量无损测定方法 第1部分:电子探针微分析法
    China National Standards
    C

    English PDF
    GB/T 17048-2009 Hard-drawn aluminium wire for overhead line Conductors
    架空绞线用硬铝线
    China National Standards
    C

    English PDF
    GB/T 14820-2009 High-voltage ignition wires for road vehiCles
    公路车辆用高压点火电线
    China National Standards
    C

    English PDF
    GB/T 12970.4-2009 Flexilbe Copper stranded conductors for electrical purposes - Part 4: Copper wires for electric brush
    电工软铜绞线 第4部分:铜电刷线
    China National Standards
    C

    English PDF
    GB/T 12970.3-2009 Flexible Copper stranded conductors for electrical purposes - Part 3: Flexible copper wire for antenna
    电工软铜绞线 第3部分:软铜天线
    China National Standards
    C

    English PDF
    GB/T 12970.2-2009 Flexible Copper stranded conductors for electrical purposes - Part 2: Flexible copper stranded conductors
    电工软铜绞线 第2部分:软铜绞线
    China National Standards
    C

    English PDF
    GB/T 12970.1-2009 Flexible Copper stranded conductors for electrical purposes - Part 1: General requirements
    电工软铜绞线 第1部分:一般规定
    China National Standards
    C

    English PDF
    GB/T 11019-2009 NiCkel coated round copper wire
    镀镍圆铜线
    China National Standards
    C

    English PDF
    GB/T 11016.4-2009 PlastiC or rubber insulated telephone cords - Part 4: Rubber insulated telephone cords
    塑料绝缘和橡皮绝缘电话软线 第4部分:橡皮绝缘电话软线
    China National Standards
    C

    English PDF
    GB/T 11016.3-2009 PlastiC or rubber insulated telephone cords - Part 3: Polypropylene insulated telephone cords
    塑料绝缘和橡皮绝缘电话软线 第3部分:聚丙烯绝缘电话软线
    China National Standards
    C

    English PDF
    GB/T 11016.2-2009 PlastiC or rubber insulated telephone cords - Part 2: Polyvinyl chloride insulated telephone cords
    塑料绝缘和橡皮绝缘电话软线 第2部分:聚氯乙烯绝缘电话软线
    China National Standards
    C

    English PDF
    GB/T 11016.1-2009 PlastiC or rubber insulated telephone cords - Part 1: General
    塑料绝缘和橡皮绝缘电话软线 第1部分:一般规定
    China National Standards
    C

    English PDF
    GB 50492-2009 Code for design of PET plant
    聚酯工厂设计规范
    China National Standards
    C

    English PDF
    GB 50488-2009 Code for design of acrylic fibres plant
    腈纶工厂设计规范
    China National Standards
    C

    English PDF
    GB/T 8190.11-2009 ReCiprocating internal combustion engines - Exhaust emission measurement - Part 11: Test-bet measurement of gaseous and particulate exhaust emissions from engines used in nonroad mobile machinery under transient test conditions
    往复式内燃机 排放测量 第11部分:非道路移动机械用发动机瞬态工况下气体和颗粒排放物的试验台测量
    China National Standards
    C

    English PDF
    GB/T 6809.7-2009 ReCiprocating internal combustion engines - Vocabulary of components and systems - Part 7: Governing systems
    往复式内燃机 零部件和系统术语 第7部分:调节系统
    China National Standards
    C

    English PDF
    GB/T 6809.6-2009 ReCiprocating internal combustion engines - Vocabulary of components and systems - Part 6: Lubricating systems
    往复式内燃机 零部件和系统术语 第6部分:润滑系统
    China National Standards
    C

    English PDF
    GB/T 6809.1-2009 ReCiprocating internal combustion engines - Vocabulary of components and systems - Part 1: Structure and external covers
    往复式内燃机 零部件和系统术语 第1部分:固定件及外部罩盖
    China National Standards
    C

    English PDF
    GB/T 4759-2009 Exhaust silenCers for internal combustion engines - Measurement procedure
    内燃机排气消声器 测量方法
    China National Standards
    C

    English PDF
    GB/T 23342-2009 ReCiprocal internal combustion engines - Recoil starting equipment - General safety requirements
    往复式内燃机 回弹式绳索起动装置 基本安全要求
    China National Standards
    C

    English PDF

    Find out:51606Items   |  To Page of: First -Previous-Next -Last  | [345] [346] [347] [348] [349] [350] [351]

     

    +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.gbstandards.org

    China National Standards