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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.

China "ac" GB Standards List:

Standard Code	Standard Title	Standard Class	Order
GB/T 21956.1-2008	The strength testing method and accepting condition of protective structures on narrow-track wheeled agricultural and forestry tractors - Part 1：Static testing method of front mounted ROPS 农林窄轮距轮式拖拉机防护装置强度试验方法和验收条件第1部分：前置式静态试验方法	China National Standards ac	English PDF
GB/T 21955-2008	Tractors and machinery for agriculture and forestry - Paper friction disc - Technical specifications 农林拖拉机和机械纸基摩擦片技术条件	China National Standards ac	English PDF
GB/T 21954.2-2008	Metal cutting band saw blades - Part 2：Characteristics and dimensions 金属切割带锯条第2部分：特性和尺寸	China National Standards ac	English PDF
GB/T 21949.2-2008	CNC universal tool milling machines - Part 2: Specifications 数控万能工具铣床第2部分：技术条件	China National Standards ac	English PDF
GB/T 21949.1-2008	CNC universal tool milling machines - Part 1: Testing of the accuracy 数控万能工具铣床第1部分：精度检验	China National Standards ac	English PDF
GB/T 21948.2-2008	Test conditions for CNC milling machines with table of variable height - Testing of accuracy - Part 2: Machines with vertical spindle 数控升降台铣床检验条件精度检验第2部分：立式铣床	China National Standards ac	English PDF
GB/T 21948.1-2008	Test conditions for CNC milling machines with table of variable height - Testing of accuracy - Part 1: Machines with horizontal spindle 数控升降台铣床检验条件精度检验第1部分：卧式铣床	China National Standards ac	English PDF
GB/T 21947-2008	Numerically milling machines for special screws - Testing of the accuracy 数控异型螺杆铣床精度检验	China National Standards ac	English PDF
GB/T 21946-2008	Numerical control gear shaving machines - Testing of the accuracy 数控剃齿机精度检验	China National Standards ac	English PDF
GB/T 21945-2008	Numerical control sector gear shaping machines - Testing of the accuracy 数控扇形齿轮插齿机精度检验	China National Standards ac	English PDF
GB/T 21944.4-2009	Special products of silicon carbide - Kiln furniture of reaction bonded silicon carbide - Part 4：Burner nozzle 碳化硅特种制品反应烧结碳化硅窑具第4部分：烧嘴套	China National Standards ac	English PDF
GB/T 21944.3-2008	Special products of silicon carbide - Kiln furniture of reaction bonded silicon carbide - Part 3：Rollers 碳化硅特种制品反应烧结碳化硅窑具第3部分：辊棒	China National Standards ac	English PDF
GB/T 21944.2-2009	Special products of silicon carbide - Kiln furniture of reaction bonded silicon carbide - Part 2：Special beam 碳化硅特种制品反应烧结碳化硅窑具第2部分：异型梁	China National Standards ac	English PDF
GB/T 21944.1-2008	Special products of silicon carbide - Kiln furniture of reaction bonded silicon carbide - Part 1：Beam 碳化硅特种制品反应烧结碳化硅窑具第1部分：方梁	China National Standards ac	English PDF
GB/T 21943-2008	Back-up pads for vulcanized fibre discs 钢纸砂盘支撑托盘	China National Standards ac	English PDF
GB/T 21942-2008	Earth-moving machinery - Loader and front loading excavator buckets - Volumetric ratings 土方机械装载机和正铲挖掘机的铲斗容量标定	China National Standards ac	English PDF
GB/T 21941-2008	Earth-moving machinery - Volumetric ratings for hoe-type and grab-type buckets of hydraulic excavators and backhoe loaders 土方机械液压挖掘机和挖掘装载机的反铲斗和抓铲斗容量标定	China National Standards ac	English PDF
GB/T 21940-2008	Earth-moving machinery - Cutting edges used on tractor-dozers, graders and scrapers - Principal shapes and basic dimensions 土方机械推土机、平地机和铲运机用刀片主要形状和基本尺寸	China National Standards ac	English PDF
GB/T 21939-2008	Earth-moving machinery - Warning devices for slow-moving machines - Ultrasonic and other systems 土方机械低速机器报警装置超声波及其它系统	China National Standards ac	English PDF
GB/T 21938-2008	Earth-moving machinery - Hydraulic excavator and backhoe loader boom-lowering control device - Requirements and tests 土方机械液压挖掘机和挖掘装载机动臂下降控制装置要求和试验	China National Standards ac	English PDF
GB/T 21937-2008	Earth-moving machinery - Crawler and wheel tractor dozer blades - Volumetric ratings 土方机械履带式和轮胎式推土机的推土铲容量标定	China National Standards ac	English PDF
GB/T 21936-2008	Earth-moving machinery - Machine-mounted retrieval device - Performance requirements 土方机械安装在机器上的拖拽装置性能要求	China National Standards ac	English PDF
GB/T 21935-2008	Earth-moving machinery - Zones of comfort and reach for controls 土方机械操纵的舒适区域与可及范围	China National Standards ac	English PDF
GB/T 21934-2008	Earth-moving machinery - Plough bolt 土方机械沉头方颈螺栓	China National Standards ac	English PDF
GB/T 21931.2-2008	Nickel, ferronickel and nickel alloys - Determination of sulfur content - Infrared absorption method after induction furnace combustion 镍、镍铁和镍合金硫含量的测定高频燃烧红外吸收法	China National Standards ac	English PDF
GB/T 21931.1-2008	Nickel,ferronickel and nickel alloys - Determination of carbon content - Infrared absorption method after induction furnace combustion 镍、镍铁和镍合金碳含量的测定高频燃烧红外吸收法	China National Standards ac	English PDF
GB/T 21928-2008	Determination of phthalate esters in food plastic packaging materials 食品塑料包装材料中邻苯二甲酸酯的测定	China National Standards ac	English PDF
GB/T 21918-2008	Method for determination of Boric acid in Foods 食品中硼酸的测定	China National Standards ac	English PDF
GB/T 21914-2008	Determination of Benzyl acetate in tea-drink - Gas chromatography method 茶饮料中乙酸苄酯的测定气相色谱法	China National Standards ac	English PDF
GB/T 21899-2008	Mowing and flattening machine 割草压扁机	China National Standards ac	English PDF
GB/T 21896-2008	2-Naphthylamine-1，5-disulfonic acid （Sulphonic Tobias acid ） 2-萘胺-1，5-二磺酸（磺化吐氏酸）	China National Standards ac	English PDF
GB/T 21891-2015	acid brilliant blue P-3R 200％(C．I． Acid blue 281) 酸性艳蓝 P-3R 200％（C．I．酸性蓝281）	China National Standards ac	English PDF
GB/T 21890-2015	acid brilliant yellow P-4R 150％(C．I． Acid yellow 42) 酸性艳黄 P-4R 150％（C．I．酸性黄42）	China National Standards ac	English PDF
GB/T 21889-2015	acid brilliant red P-3B 200％(C．I．Acid red 336) 酸性艳红 P-3B 200％（C．I．酸性红336）	China National Standards ac	English PDF
GB/T 21888-2008	acid brilliant red P-9B 150%（C.I. Acid red 131）酸性艳红P-9B 150%（C.I.酸性红131）	China National Standards ac	English PDF
GB/T 21881-2015	acid dyes—Determination of levelling properties 酸性染料匀染性的测定	China National Standards ac	English PDF
GB/T 21880-2015	acid dyes—Determination of migration properties 酸性染料移染性的测定	China National Standards ac	English PDF
GB/T 21872-2008	Sulphonic acid hardener for foundry no-bake furan resin 铸造自硬呋喃树脂用磺酸固化剂	China National Standards ac	English PDF
GB/T 21870-2008	Medical gloves made from natural rubber latex - Determination of water-extractable protein using the modified Lowry method 天然胶乳医用手套水抽提蛋白质的测定改进Lowry法	China National Standards ac	English PDF
GB/T 21869-2008	Medical gloves - Determination of removable surface powder 医用手套表面残余粉末的测定	China National Standards ac	English PDF
GB/T 21868.6-2008	Pigments and extenders - Methods of dispersion for assessment of dispersion characteristics - Part 6: Dispersion using a triple-roll mill 颜料和体质颜料评定分散性用的分散方法第6部分:用三辊磨分散	China National Standards ac	English PDF
GB/T 21868.5-2008	Pigments and extenders - Methods of dispersion for assessment of dispersion characteristics - Part 5: Dispersion using an automatic muller 颜料和体质颜料评定分散性用的分散方法第5部分:用自动平磨机分散	China National Standards ac	English PDF
GB/T 21868.4-2008	Pigments and extenders - Methods of dispersion for assessment of dispersion characteristics - Part 4:Dispersion using a bead mill 颜料和体质颜料评定分散性用的分散方法第4部分:用砂磨分散	China National Standards ac	English PDF
GB/T 21868.3-2008	Pigments and extenders - Methods of dispersion for assessment of dispersion characteristics - Part 3: Dispersion using a high-speed impeller mill 颜料和体质颜料评定分散性用的分散方法第3部分:用高速搅拌机分散	China National Standards ac	English PDF
GB/T 21868.2-2008	Pigments and extenders - Methods of dispersion for assessment of dispersion characteristics - Part 2:Dispersion using an oscillatory shaking machine 颜料和体质颜料评定分散性用的分散方法第2部分:用振荡磨分散	China National Standards ac	English PDF
GB/T 21868.1-2008	Pigments and extenders - Methods of dispersion for assessment of dispersion characteristics - Part 1:Introduction 颜料和体质颜料评定分散性用的分散方法第1部分:总则	China National Standards ac	English PDF
GB/T 21867.3-2008	Pigments and extenders - Methods of assessment of dispersion characteristics - Part 3:Assessment from the change in gloss 颜料和体质颜料分散性的评定方法第3部分:由光泽的变化进行评定	China National Standards ac	English PDF
GB/T 21867.2-2008	Pigments and extenders - Methods of assessment of dispersion characteristics - Part 2:Assessment from the change in fineness of grind 颜料和体质颜料分散性的评定方法第2部分:由研磨细度的变化进行评定	China National Standards ac	English PDF
GB/T 21867.1-2008	Pigments and extenders - Methods of assessment of dispersion characteristics - Part 1:Assessment from the change in tinting strength of coloured pigments 颜料和体质颜料分散性的评定方法第1部分:由着色颜料的着色力变化进行评定	China National Standards ac	English PDF
GB/T 21866-2008	Test method and effect for antibacterial capability of paints film 抗菌涂料（漆膜）抗菌性测定法和抗菌效果	China National Standards ac	English PDF
GB/T 21840-2008	Vulcanizing accelerator TBBS 硫化促进剂 TBBS	China National Standards ac	English PDF
GB/T 21838.2-2008	Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 2: Verification and calibration of testing machines 金属材料硬度和材料参数的仪器化压痕试验第2部分: 试验机的检验和校准	China National Standards ac	English PDF
GB/T 21837-2008	Practice for electromagnetic examination of ferromagnetic steel wire rope 铁磁性钢丝绳电磁检测方法	China National Standards ac	English PDF
GB/T 21830-2008	Testing of chemicals - Daphnia sp., acute immobilisation test 化学品溞类急性活动抑制试验	China National Standards ac	English PDF
GB/T 21829-2008	Testing of chemicals - Simulation test Aerobic sewage treatment - Aactivated sludge units 化学品污水好氧处理模拟试验活性污泥单元法	China National Standards ac	English PDF
GB/T 21826-2008	Chemicals - Test method of acute oral toxicity - Up and down procedure (UDP) 化学品急性经口毒性试验方法上下增减剂量法（UDP）	China National Standards ac	English PDF
GB/T 21814-2008	Testing methods for industrial wastewater - Fish acute toxicity 工业废水的试验方法鱼类急性毒性试验	China National Standards ac	English PDF
GB/T 21813-2008	Chemicals - Honeybees acute contact toxicity test 化学品蜜蜂急性接触性毒性试验	China National Standards ac	English PDF
GB/T 21812-2008	Chemicals - Honeybees, acute oral toxicity test 化学品蜜蜂急性经口毒性试验	China National Standards ac	English PDF
GB/T 21809-2008	Chemicals - Test method of earthworm, acute toxicity test 化学品蚯蚓急性毒性试验	China National Standards ac	English PDF
GB/T 21807-2008	Testing of chemicals - Fish, short-term toxicity test on embryo and sac-fry stages 化学品鱼类胚胎和卵黄囊仔鱼阶段的短期毒性试验	China National Standards ac	English PDF
GB/T 21804-2008	Chemicals - Test method of acute oral toxicity-fixed dosed procedure 化学品急性经口毒性固定剂量试验方法	China National Standards ac	English PDF
GB/T 21796-2008	Testing of chemicals - activated sludge, respiration inhibition test 化学品活性污泥呼吸抑制试验	China National Standards ac	English PDF
GB/T 21786-2008	Chemicals - Test method of bacterial reverse mutation 化学品细菌回复突变试验方法	China National Standards ac	English PDF
GB/T 21782.3-2008	Coating powders - Part 3：Determination of density by liquid displacement pyknometer 粉末涂料第3部分：液体置换比重瓶法测定密度	China National Standards ac	English PDF
GB/T 21782.13-2009	Coating powders - Part 13: Particle size analysis by laser diffraction 粉末涂料第13部分：激光衍射法分析粒度	China National Standards ac	English PDF
GB/T 21770-2008	Chemicals(organophosphorus substances) - Test method of delayed neurotoxicity following acute exposure 化学品（有机磷化合物）急性染毒的迟发性神经毒性试验方法	China National Standards ac	English PDF
GB/T 21757-2008	Chemicals - Test method of acute oral toxicity for chemicals - Acute toxic class method 化学品急性经口毒性试验急性毒性分类法	China National Standards ac	English PDF
GB/T 21745-2008	Ration of workers for manufacturing rail traffic engineering components 轨道交通工程构件制造劳动定员定额	China National Standards ac	English PDF
GB/T 21744-2008	Ration of workers for manufacturing large rail traffic engineering equipments 轨道交通工程大型设备制造综合劳动定额	China National Standards ac	English PDF
GB/T 21721-2008	Hazard administrantion practice on sale locale of agricultural product 农副产品销售现场危害管理规范	China National Standards ac	English PDF
GB/T 21720-2008	Administrant & Technical practice for markets of agricultural products 农贸市场管理技术规范	China National Standards ac	English PDF
GB/T 21710-2008	Hygienic practice for egg products 蛋制品卫生操作规范	China National Standards ac	English PDF
GB/T 21709.9-2008	Standardized manipulations of acupuncture and moxibustion - Part 9: Acupoint paste 针灸技术操作规范第9部分穴位贴敷	China National Standards ac	English PDF
GB/T 21709.8-2008	Standardized manipulations of acupuncture and moxibustion - Part 8: Intradermal needle 针灸技术操作规范第8部分皮内针	China National Standards ac	English PDF
GB/T 21709.7-2008	Standardized manipulations of acupuncture and moxibustion - Part 7: Skin needle 针灸技术操作规范第7部分皮肤针	China National Standards ac	English PDF
GB/T 21709.6-2008	Standardized manipulations of acupuncture and moxibustion - Part 6: Point injection 针灸技术操作规范第6部分穴位注射	China National Standards ac	English PDF
GB/T 21709.5-2008	Standardized manipulations of acupuncture and moxibustion - Part 5: Cupping therapy 针灸技术操作规范第5部分拔罐	China National Standards ac	English PDF
GB/T 21709.4-2008	Standardized manipulations of acupuncture and moxibustion - Part 4: Three-edged needle 针灸技术操作规范第4部分三棱针	China National Standards ac	English PDF
GB/T 21709.3-2008	Standardized manipulation of acupuncture and moxibusteon - Part 3：Ear acupuncture 针灸技术操作规范第3部分耳针	China National Standards ac	English PDF
GB/T 21709.22-2013	Standardized manipulations of acupuncture and moxibustion―Part 22: scraping therapy 针灸技术操作规范第22部分：刮痧	China National Standards ac	English PDF
GB/T 21709.2-2008	Standardized manipulations of acupuncture and moxibustion - Part 2: Scalp acupuncture 针灸技术操作规范第2部分头针	China National Standards ac	English PDF
GB/T 21709.21-2013	Standardized manipulations of acupuncture and moxibustion―Part 21: Filiform needle manipulation by basic applying technique 针灸技术操作规范第21部分：毫针基本手法	China National Standards ac	English PDF
GB/T 21709.20-2009	Standardized manipulations of acupuncture and moxibustion - Part 20: Basic techniques of filiform needle 针灸技术操作规范第20部分：毫针基本刺法	China National Standards ac	English PDF
GB/T 21709.19-2009	Standardized manipulations of acupuncture and moxibustion - Part 19: Wrist-ankle acupuncture 针灸技术操作规范第19部分：腕踝针	China National Standards ac	English PDF
GB/T 21709.18-2009	Standardized manipulations of acupuncture and moxibustion - Part 18: Oral and lip acupuncture 针灸技术操作规范第18部分：口唇针	China National Standards ac	English PDF
GB/T 21709.17-2009	Standardized manipulations of acupuncture and moxibustion - Part 17: Nose acupuncture 针灸技术操作规范第17部分：鼻针	China National Standards ac	English PDF
GB/T 21709.16-2013	Standardized manipulations of acupuncture and moxibustion―Part 16: Abdominal acupuncture 针灸技术操作规范第16部分：腹针	China National Standards ac	English PDF
GB/T 21709.15-2009	Standardized manipulations of acupuncture and moxibustion - Part 15: Eye acupuncture 针灸技术操作规范第15部分：眼针	China National Standards ac	English PDF
GB/T 21709.14-2009	Standardized manipulations of acupuncture and moxibustion - Part 14: Di acupuncture 针灸技术操作规范第14部分：鍉针	China National Standards ac	English PDF
GB/T 21709.13-2013	Standardized manipulations of acupuncture and moxibustion―Part 13: Awn needle 针灸技术操作规范第13部分：芒针	China National Standards ac	English PDF
GB/T 21709.12-2009	Standardized manipulations of acupuncture and moxibustion - Part 12: Fire acupuncture 针灸技术操作规范第12部分：火针	China National Standards ac	English PDF
GB/T 21709.1-2008	Standardized manipulations of acupuncture and moxibustion - Part 1: Moxibustion 针灸技术操作规范第1部分艾灸	China National Standards ac	English PDF
GB/T 21709.11-2009	Standardized manipulations of acupuncture and moxibustion - Part 11: Electroacupuncture 针灸技术操作规范第11部分：电针	China National Standards ac	English PDF
GB/T 21709.10-2008	Standardized manipulations of acupuncture and moxibustion - Part 10: Thread-embedding therapy 针灸技术操作规范第10部分穴位埋线	China National Standards ac	English PDF
GB/T 21691-2008	Woodworking machines - Bandsaw blade sharpening machines - Nomenclature 木工机床　带锯磨锯机　术语	China National Standards ac	English PDF
GB/T 21689-2008	Woodworking machines - Narrow belt sanding machines with sliding table or frame - Nomenclature 木工机床　窄带磨光机　术语	China National Standards ac	English PDF
GB/T 21688-2008	Woodworking machines - Single-end edge bonding machine - Nomenclature 木工机床　单面直线封边机　术语	China National Standards ac	English PDF
GB/T 21687-2008	Woodworking machines - Single-end tenoning machines with several spindles - Nomenclature 木工机床　单头多轴开榫机　术语	China National Standards ac	English PDF
GB/T 21686-2008	Woodworking machines - Slot mortising machines - Nomenclature and acceptance conditions 木工机床　卧式榫槽机　术语和精度	China National Standards ac	English PDF

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