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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-32051-2024 |
Energy consumption liMits per unit product of titanium dioxide and iron oxide pigments 钛白粉和氧化铁颜料单位产品能源消耗限额 |
China National Standards Mi |
 English PDF |
| GB-21257-2024 |
Energy consumption liMits per unit product of caustic soda, polyvinyl chloride resin and methane chloride 烧碱、聚氯乙烯树脂和甲烷氯化物单位产品能源消耗限额 |
China National Standards Mi |
English PDF |
| GB/T 626-2006 |
CheMical reagents - Nitric acid 化学试剂-硝酸 |
China National Standards Mi |
English PDF |
| GB/T 609-2018 |
CheMical reagents - General method for determination of total nitrogen 化学试剂-总氮量测定通用方法 |
China National Standards Mi |
English PDF |
| GB/Z 14048.24-2024 |
Low-voltage switchgear and control equipment - Part 7-5: Auxiliary devices - TerMinal blocks for aluminum conductors 低压开关设备和控制设备-第7-5部分：辅助器件-铝导体的接线端子排 |
China National Standards Mi |
English PDF |
| GB/Z 3480.22-2024 |
Calculation of load capacity of spur and helical gears - Part 22: Calculation of load capacity of Micropitting 直齿轮和斜齿轮承载能力计算-第22部分：微点蚀承载能力计算 |
China National Standards Mi |
English PDF |
| GB/Z 43963-2024 |
Guide to deterMining the values of electrical clearances, creepage distances and solid insulation requirements for equipment with rated voltages above 1000V to 2000V AC and above 1500V to 3000V DC 确定额定电压在交流1000V以上至2000V，直流1500V以上至3000V间设备的电气间隙、爬电距离的数值以及对固体绝缘要求的指南 |
China National Standards Mi |
English PDF |
| GB/Z 43996.2-2024 |
Microbubble technology - Agricultural applications - Part 2: Test method for evaluating the germination promotion effect on barley seeds 微细气泡技术-农业应用-第2部分：评价大麦种子发芽促进作用的测试方法 |
China National Standards Mi |
English PDF |
| GB/Z 43998-2024 |
Nanotechnology - Methods for measuring the concentration of nanoscale carbon black and amorphous silica in the air of Mixed dust manufacturing environments 纳米技术-混合粉尘制造环境空气中纳米级炭黑和无定形二氧化硅浓度的测量方法 |
China National Standards Mi |
English PDF |
| GB/Z 44002-2024 |
Space environment - Methods for deterMining solar energy proton injection and peak flux 空间环境-太阳能量质子注量和峰值通量的确定方法 |
China National Standards Mi |
English PDF |
| GB/T 10932-2024 |
Thread Micrometer 螺纹千分尺 |
China National Standards Mi |
English PDF |
| GB/T 11066.12-2024 |
Methods for cheMical analysis of gold - Part 12: - Determination of silver, copper, iron, lead, bismuth, antimony, magnesium, nickel, manganese, palladium, chromium, platinum, rhodium, titanium, zinc, arsenic, tin, silicon, cobalt, calcium, potassium, lithium, sodium, tellurium, vanadium, zirconium, cadmium, molybdenum, rhenium, and aluminum content - Inductively coupled plasma atomic emission spectrometry 金化学分析方法-第12-部分：-银、铜、铁、铅、铋、锑、镁、镍、锰、钯、铬、铂、铑、钛、锌、砷、锡、硅、钴、钙、钾、锂、钠、碲、钒、锆、镉、钼、铼、铝含量的测定-电感耦合等离子体原子发射光谱法 |
China National Standards Mi |
English PDF |
| GB/T 12690.12-2024 |
Non-rare earth impurities in rare earth metals and their oxides - CheMical analysis methods - Part 12: Determination of thorium and uranium content - Inductively coupled plasma mass spectrometry 稀土金属及其氧化物中非稀土杂质-化学分析方法-第12部分：钍、铀量的测定-电感耦合等离子体质谱法 |
China National Standards Mi |
English PDF |
| GB/T 12959-2024 |
Method for deterMination of heat of hydration of cement 水泥水化热测定方法 |
China National Standards Mi |
English PDF |
| GB/T 13077-2024 |
Periodic inspection and evaluation of seamless aluMinum alloy gas cylinders 铝合金无缝气瓶定期检验与评定 |
China National Standards Mi |
English PDF |
| GB/T 13748.20-2024 |
CheMical analysis methods for magnesium and magnesium alloys-Part 20: Determination of element content-Inductively coupled plasma atomic emission spectrometry 镁及镁合金化学分析方法-第20部分：元素含量的测定-电感耦合等离子体原子发射光谱法 |
China National Standards Mi |
English PDF |
| GB/T 13930-2024 |
Water ring vacuum pumps and water ring compressors-Methods for deterMination of gas volume 水环真空泵和水环压缩机-气量测定方法 |
China National Standards Mi |
English PDF |
| GB/T 14264-2024 |
Terms of seMiconductor materials 半导体材料术语 |
China National Standards Mi |
English PDF |
| GB/T 14949.7-2024 |
Manganese ore-DeterMination of sodium and potassium content-Flame atomic absorption spectrometry 锰矿石-钠和钾含量的测定-火焰原子吸收光谱法 |
China National Standards Mi |
English PDF |
| GB/T 15115-2024 |
Die-cast aluMinum alloys 压铸铝合金 |
China National Standards Mi |
English PDF |
| GB/T 16477.1-2024 |
CheMical analysis methods for rare earth ferrosilicon alloys and magnesium ferrosilicon alloys-Part 1: Determination of total rare earth content and fifteen rare earth elements 稀土硅铁合金及镁硅铁合金化学分析方法-第1部分：稀土总量、十五个稀土元素含量的测定 |
China National Standards Mi |
English PDF |
| GB/T 16659-2024 |
DeterMination method of mercury in coal 煤中汞的测定方法 |
China National Standards Mi |
English PDF |
| GB/T 17737.10-2024 |
Coaxial communication cables - Part 10: Sectional specification for fluoropolymer insulated seMi-rigid cables 同轴通信电缆-第10部分：含氟聚合物绝缘半硬电缆分规范 |
China National Standards Mi |
English PDF |
| GB/T 17737.11-2024 |
Coaxial communication cables - Part 11: Sectional specification for polyethylene insulated seMi-rigid cables 同轴通信电缆-第11部分：聚乙烯绝缘半硬电缆分规范 |
China National Standards Mi |
English PDF |
| GB/T 17937-2024 |
AluMinum clad steel wire for electrical purposes 电工用铝包钢线 |
China National Standards Mi |
English PDF |
| GB/T 18153-2024 |
Safety of machinery - Safety data for deterMining the temperature limit of accessible hot surfaces 机械安全-用于确定可接触热表面温度限值的安全数据 |
China National Standards Mi |
English PDF |
| GB/T 18222.2-2024 |
Small craft - DeterMination of maximum propulsion rating by maneuvering speed - Part 2: Craft with a hull length between 8m and 24m 小艇-用操纵速度确定最大推进额定功率-第2部分：艇体长度在8m～24m之间的艇 |
China National Standards Mi |
English PDF |
| GB/T 18891-2024 |
Clock tiMing number identification of phase difference in three-phase AC system 三相交流系统相位差的钟时序数标识 |
China National Standards Mi |
English PDF |
| GB/T 18910.12-2024 |
Liquid crystal display devices - Part 1-2: TerMinology and symbols 液晶显示器件-第1-2部分：术语和符号 |
China National Standards Mi |
English PDF |
| GB/T 20790-2024 |
SeMi-feed combine harvesters - Technical conditions 半喂入联合收割机-技术条件 |
China National Standards Mi |
English PDF |
| GB/T 20871.12-2024 |
Organic light-eMitting diode displays Parts - Part 1-2: Terminology and text symbols 有机发光二极管显示器件-第1-2部分：术语与文字符号 |
China National Standards Mi |
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 Mi |
English PDF |
| GB/T 223.60-2024 |
Steel and alloys - DeterMination of silicon content - Gravimetric method 钢铁及合金-硅含量的测定-重量法 |
China National Standards Mi |
English PDF |
| GB/T 23561.11-2024 |
Methods for deterMination of physical and mechanical properties of coal and rock - Part 11: Determination of shear strength of coal and rock 煤和岩石物理力学性质测定方法-第11部分：煤和岩石抗剪强度测定方法 |
China National Standards Mi |
English PDF |
| GB/T 23561.1-2024 |
Methods for deterMination of physical and mechanical properties of coal and rock - Part 1: General provisions for sampling 煤和岩石物理力学性质测定方法-第1部分：采样一般规定 |
China National Standards Mi |
English PDF |
| GB/T 26027-2024 |
High damage tolerance aluMinum alloy profiles 高损伤容限铝合金型材 |
China National Standards Mi |
English PDF |
| GB/T 26600-2024 |
Microscopes - Immersion liquids for optical microscopy 显微镜-光学显微术用浸液 |
China National Standards Mi |
English PDF |
| GB/T 28629-2024 |
CheMical analysis methods for free silicon dioxide in cement clinker 水泥熟料中游离二氧化硅化学分析方法 |
China National Standards Mi |
English PDF |
| GB/T 2900.17-2024 |
Electrical terMinology - Measuring relays and protective devices 电工术语-量度继电器和保护设备 |
China National Standards Mi |
English PDF |
| GB/T 2910.11-2024 |
Textiles - Quantitative cheMical analysis - Part 11: Mixtures of certain cellulose fibers with certain other fibers (sulfuric acid method) 纺织品-定量化学分析-第11部分：某些纤维素纤维与某些其他纤维的混合物（硫酸法） |
China National Standards Mi |
English PDF |
| GB/T 33488.5-2024 |
Inspection methods for plastic welded pressure-bearing equipment for cheMical industry-Part 5: Ultrasonic testing by time-of-flight diffraction 化工用塑料焊接制承压设备检验方法-第5部分：衍射时差法超声检测 |
China National Standards Mi |
English PDF |
| GB/T 38216.5-2024 |
Steel slag - DeterMination of manganese oxide content - Flame atomic absorption spectrometry 钢渣-氧化锰含量的测定-火焰原子吸收光谱法 |
China National Standards Mi |
English PDF |
| GB/T 3880.2-2024 |
AluMinium and aluminium alloy plates and strips for general industrial use - Part 2: Mechanical properties 一般工业用铝及铝合金板、带材-第2部分：力学性能 |
China National Standards Mi |
English PDF |
| GB/T 3880.3-2024 |
AluMinium and aluminium alloy plates and strips for general industrial use - Part 3: Dimensional deviation 一般工业用铝及铝合金板、带材-第3部分：尺寸偏差 |
China National Standards Mi |
English PDF |
| GB/T 40565.1-2024 |
Hydraulic transMission connections - Quick-change connectors - Part 1: General type 液压传动连接-快换接头-第1部分：通用型 |
China National Standards Mi |
English PDF |
| GB/T 4074.4-2024 |
Test methods for winding wires - Part 4: CheMical properties 绕组线试验方法-第4部分：化学性能 |
China National Standards Mi |
English PDF |
| GB/T 4103.18-2024 |
Methods for cheMical analysis of lead and lead alloys - Part 18: Determination of silver, copper, bismuth, arsenic, antimony, tin, zinc, iron, cadmium, nickel, magnesium, aluminum, calcium, selenium and tellurium content - Inductively coupled plasma mass spectrometry 铅及铅合金化学分析方法-第18部分：银、铜、铋、砷、锑、锡、锌、铁、镉、镍、镁、铝、钙、硒和碲含量的测定-电感耦合等离子体质谱法 |
China National Standards Mi |
English PDF |
| GB/T 42513.6-2024 |
CheMical analysis methods for nickel alloys-Part 6: Determination of molybdenum content-Inductively coupled plasma atomic emission spectrometry 镍合金化学分析方法-第6部分：钼含量的测定-电感耦合等离子体原子发射光谱法 |
China National Standards Mi |
English PDF |
| GB/T 42513.7-2024 |
CheMical analysis methods for nickel alloys-Part 7: Determination of cobalt, chromium, copper, iron and manganese content-Flame atomic absorption spectrometry 镍合金化学分析方法-第7部分：钴、铬、铜、铁和锰含量的测定-火焰原子吸收光谱法 |
China National Standards Mi |
English PDF |
| GB/T 43846.1-2024 |
Microscope-Nomenclature of microscope objectives-Part 1: Image field flatness/flat field 显微镜-显微镜物镜的命名-第1部分：像场平面度/平场 |
China National Standards Mi |
English PDF |
| GB/T 43846.2-2024 |
Microscope-Nomenclature of microscope objectives-Part 2: Chromatic aberration correction 显微镜-显微镜物镜的命名-第2部分：色差校正 |
China National Standards Mi |
English PDF |
| GB/T 43846.3-2024 |
Microscope-Nomenclature of microscope objectives-Part 3: spectral transmittance 显微镜-显微镜物镜的命名-第3部分：光谱透射率 |
China National Standards Mi |
English PDF |
| GB/T 43859-2024 |
Water Activity Meter Performance DeterMination Method 水分活度仪性能测定方法 |
China National Standards Mi |
English PDF |
| GB/T 43860.12-2024 |
Touch and Interactive Display-Part 1-2: TerMinology and Text Symbols 触摸和交互显示-第1-2部分：术语和文字符号 |
China National Standards Mi |
English PDF |
| GB/T 43861-2024 |
General Rules for Microwave Plasma Atomic Emission Spectroscopy Methods 微波等离子体原子发射光谱方法通则 |
China National Standards Mi |
English PDF |
| GB/T 43864.12-2024 |
Display light source components - Part 1-2: terMinology and text symbols 显示光源组件-第1-2部分：术语和文字符号 |
China National Standards Mi |
English PDF |
| GB/T 43867-2024 |
Electrical transportation equipment - terMinology and classification 电气运输设备-术语和分类 |
China National Standards Mi |
English PDF |
| GB/T 43868-2024 |
Start-up acceptance procedures for electrocheMical energy storage power stations 电化学储能电站启动验收规程 |
China National Standards Mi |
English PDF |
| GB/T 43873-2024 |
Test method for upper and lower liMit temperature of ultra-thin glass annealing 超薄玻璃退火上下限温度试验方法 |
China National Standards Mi |
English PDF |
| GB/T 43875-2024 |
DeterMination method of total chromium in cement raw materials 水泥原材料中总铬的测定方法 |
China National Standards Mi |
English PDF |
| GB/T 43876-2024 |
DeterMination method of cement paste viscosity 水泥净浆黏度测定方法 |
China National Standards Mi |
English PDF |
| GB/T 43877-2024 |
Iron ore - deterMination method of assimilation performance 铁矿石-同化性能测定方法 |
China National Standards Mi |
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 Mi |
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 Mi |
English PDF |
| GB/T 43891-2024 |
Non-metallic cheMical equipment - Test method for heat transfer coefficient and flow resistance performance of impermeable graphite heat exchangers 非金属化工设备-不透性石墨换热器传热系数和流阻性能测试方法 |
China National Standards Mi |
English PDF |
| GB/T 43892-2024 |
Spectral transMittance test method for quartz glass 石英玻璃光谱透射比试验方法 |
China National Standards Mi |
English PDF |
| GB/T 43894.1-2024 |
Evaluation of near-edge geometry of seMiconductor wafers - Part 1: High radial second derivative method (ZDD) 半导体晶片近边缘几何形态评价-第1部分：高度径向二阶导数法（ZDD） |
China National Standards Mi |
English PDF |
| GB/T 43899-2024 |
Pig iron - DeterMination of multi-element content - Spark discharge atomic emission spectrometry (conventional method) 生铁-多元素含量的测定-火花放电原子发射光谱法（常规法） |
China National Standards Mi |
English PDF |
| GB/T 43905.1-2024 |
Laboratory methods for sampling fumes and gases for welding and related processes - Part 1: DeterMination of emission rates of fumes from arc welding and collection of fumes for analysis 焊接及相关工艺中烟尘和气体取样的实验室方法-第1部分：电弧焊中烟尘排放速率的测定和分析用烟尘的收集 |
China National Standards Mi |
English PDF |
| GB/T 43905.2-2024 |
Laboratory methods for sampling fumes and gases for welding and related processes - Part 2: DeterMination of emission rates of carbon monoxide, carbon dioxide, nitric oxide and nitrogen dioxide during arc welding, cutting and gouging 焊接及相关工艺中烟尘和气体取样的实验室方法-第2部分：电弧焊、切割及气刨中一氧化碳、二氧化碳、一氧化氮、二氧化氮排放速率的测定 |
China National Standards Mi |
English PDF |
| GB/T 43905.3-2024 |
Laboratory methods for sampling fumes and gases for welding and related processes - Part 3: DeterMination of ozone emission rate during arc welding 焊接及相关工艺中烟尘和气体取样的实验室方法-第3部分：电弧焊中臭氧排放速率的测定 |
China National Standards Mi |
English PDF |
| GB/T 43905.4-2024 |
Laboratory methods for sampling fumes and gases for welding and related processes - Part 4: EMission limits of welding fumes from welding materials 焊接及相关工艺中烟尘和气体取样的实验室方法-第4部分：焊接材料焊接烟尘排放限值 |
China National Standards Mi |
English PDF |
| GB/T 43905.6-2024 |
Laboratory methods for sampling fumes and gases in welding and related processes - Part 6: Quantitative deterMination of fumes and gases in resistance spot welding 焊接及相关工艺中烟尘和气体取样的实验室方法-第6部分：电阻点焊中烟尘和气体的定量化测定 |
China National Standards Mi |
English PDF |
| GB/T 43910-2024 |
Logistics and warehousing equipment - TerMinology 物流仓储设备-术语 |
China National Standards Mi |
English PDF |
| GB/T 43917.3-2024 |
Welding fume capture and separation equipment-Part 3: Capture of fume suction devices on welding guns DeterMination of efficiency 焊接烟尘捕集和分离设备-第3部分：焊枪上烟尘吸气装置捕集效率的测定 |
China National Standards Mi |
English PDF |
| GB/T 43917.4-2024 |
Welding fume capture and separation equipment-Part 4: DeterMination of minimum air volume of capture device 焊接烟尘捕集和分离设备-第4部分：捕集装置最小风量的测定 |
China National Standards Mi |
English PDF |
| GB/T 43920-2024 |
General technical specifications for centralized smelting and distribution of aluMinum liquid for die casting 压铸用铝液集中熔炼配送通用技术规范 |
China National Standards Mi |
English PDF |
| GB/T 43924.2-2024 |
Aerospace-MJ thread-Part 2: LiMit dimensions of threads for bolts and nuts 航空航天-MJ螺纹-第2部分：螺栓和螺母螺纹的极限尺寸 |
China National Standards Mi |
English PDF |
| GB/T 43924.3-2024 |
Aerospace-MJ thread-Part 3: LiMit dimensions of threads for fluid system pipe fittings 航空航天-MJ螺纹-第3部分：流体系统管路件螺纹的极限尺寸 |
China National Standards Mi |
English PDF |
| GB/T 43933-2024 |
Technical specifications for land reclamation and ecological restoration of metal Mines 金属矿土地复垦与生态修复技术规范 |
China National Standards Mi |
English PDF |
| GB/T 43934-2024 |
Technical specifications for land reclamation and ecological restoration of coal Mines 煤矿土地复垦与生态修复技术规范 |
China National Standards Mi |
English PDF |
| GB/T 43935-2024 |
Technical specifications for monitoring and evaluation of land reclamation and ecological restoration of Mines 矿山土地复垦与生态修复监测评价技术规范 |
China National Standards Mi |
English PDF |
| GB/T 43941.1-2024 |
Technical requirements and test methods for high-speed modems in satellite-to-ground data transMission-Part 1: Modulator- 星地数据传输中高速调制解调器技术要求和测试方法-第1部分:调制器- |
China National Standards Mi |
English PDF |
| GB/T 43948-2024 |
Small boats-Steering gear-Cable pulley transMission system 小艇-操舵装置-缆索滑轮传动系统 |
China National Standards Mi |
English PDF |
| GB/T 43951-2024 |
General quality rules for coated iron and coated aluMinum for food containers 食品容器用覆膜铁、覆膜铝质量通则 |
China National Standards Mi |
English PDF |
| GB/T 43955-2024 |
Inspection, marking and packaging of pure and blended yarns of cotton and cheMical fibers 棉及化纤纯纺、混纺纱线检验、标志与包装 |
China National Standards Mi |
English PDF |
| GB/T 43964-2024 |
Home Technical requirements for over-the-air download (OTA) of electric automatic controllers for use with and siMilar purposes 家用和类似用途电自动控制器空中下载（OTA）技术要求 |
China National Standards Mi |
English PDF |
| GB/T 43967-2024 |
Space environment - single particle effect pulse laser test method for seMiconductor devices for aerospace use 空间环境-宇航用半导体器件单粒子效应脉冲激光试验方法 |
China National Standards Mi |
English PDF |
| GB/T 43968-2024 |
General rules for high performance liquid chromatography - atoMic fluorescence spectrometer combined analysis methods 高效液相色谱-原子荧光光谱仪联用分析方法通则 |
China National Standards Mi |
English PDF |
| GB/T 43970-2024 |
General rules for cheMical vapor generation - atomic fluorescence spectrometry analysis methods 化学蒸气发生-原子荧光光谱分析方法通则 |
China National Standards Mi |
English PDF |
| GB/T 44003-2024 |
Mechanical Property Measurement - Test Method for DelaMination Strength of REBCO Coated Conductors (Copper Plating) 力学性能测量-REBCO涂层导体（镀铜）脱层强度测试方法 |
China National Standards Mi |
English PDF |
| GB/T 44007-2024 |
Nanotechnology - DeterMination of Hydrogen Storage in Nanoporous Materials - Gas Adsorption Method 纳米技术-纳米多孔材料储氢量测定-气体吸附法 |
China National Standards Mi |
English PDF |
| GB/T 44020-2024 |
Information Technology - Computer Graphics Image Processing and Environmental Data Representation - Representation of Real-time Portraits and Entities in Mixed and Augmented Reality 信息技术-计算机图形图像处理和环境数据表示-混合与增强现实中实时人物肖像和实体的表示 |
China National Standards Mi |
English PDF |
| GB/T 4701.12-2024 |
Ferrotitanium - DeterMination of titanium content - Diantipyryl methane spectrophotometry 钛铁-钛含量的测定-二安替吡啉甲烷分光光度法 |
China National Standards Mi |
English PDF |
| GB/T 4701.13-2024 |
Ferrotitanium - DeterMination of silicon, manganese, phosphorus, chromium, aluminum, magnesium, copper, vanadium and nickel content - Inductively coupled plasma atomic emission spectrometry 钛铁-硅、锰、磷、铬、铝、镁、铜、钒、镍含量的测定-电感耦合等离子体原子发射光谱法 |
China National Standards Mi |
English PDF |
| GB/T 5121.8-2024 |
CheMical analysis methods for copper and copper alloys - Part 8: Determination of oxygen, nitrogen and hydrogen content 铜及铜合金化学分析方法-第8部分：氧、氮、氢含量的测定 |
China National Standards Mi |
English PDF |
| GB/T 5484-2024 |
CheMical analysis methods for gypsum 石膏化学分析方法 |
China National Standards Mi |
English PDF |
| GB/T 5762-2024 |
CheMical analysis methods for limestone, quicklime and slaked lime for building materials 建材用石灰石、生石灰和熟石灰化学分析方法 |
China National Standards Mi |
English PDF |
| GB/T 6730.73-2024 |
Iron Ore-DeterMination of Total Iron Content-ED TA photometric titration 铁矿石-全铁含量的测定-EDTA光度滴定法 |
China National Standards Mi |
English PDF |
| GB/T 8177-2024 |
Two-point Internal Diameter Micrometer 两点内径千分尺 |
China National Standards Mi |
English PDF |
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