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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 39798-2021 |
Test methods for optical properties of glass used on muLTiple units 动车组玻璃光学性能试验方法 |
China National Standards LT |
 English PDF |
| GB/T 39797-2021 |
Test method for surface tension of glass meLT -- Sessile drop method 玻璃熔体表面张力试验方法 座滴法 |
China National Standards LT |
English PDF |
| GB/T 39796-2021 |
Test method for airbone sound insulating properties of glass used on muLTipe units 动车组玻璃隔声性能试验方法 |
China National Standards LT |
English PDF |
| GB/T 39795-2021 |
Conveyor beLTs for general purpose use—Electrical and flammability safety requirements 普通用途输送带 导电性和可燃性安全要求 |
China National Standards LT |
English PDF |
| GB/T 39750-2021 |
Technology requirements of DC arc-fauLT circuit protection for photovoltaic power system 光伏发电系统直流电弧保护技术要求 |
China National Standards LT |
English PDF |
| GB/T 39598-2021 |
A guide to the limited quantity in indoor loading for wood-based panel based on its uLTimate formaldehyde emission 基于极限甲醛释放量的人造板室内承载限量指南 |
China National Standards LT |
English PDF |
| GB/T 28267.1-2021 |
Steel cord conveyor beLTs—Part 1:Design,dimensions and mechanical requirements for conveyor belts for general use 钢丝绳芯输送带 第1部分：普通用途输送带的设计、尺寸和机械要求 |
China National Standards LT |
English PDF |
| GB/T 24847-2021 |
Technical guide on 1000kV AC system voLTage and reactive power 1000kV交流系统电压和无功电力技术导则 |
China National Standards LT |
English PDF |
| GB/T 21715.5-2021 |
HeaLTh informatics—Patient healthcard data—Part 5: Identification data 健康信息学 患者健康卡数据 第5部分：标识数据 |
China National Standards LT |
English PDF |
| GB/T 20645-2021 |
Specific environmental condition—Technical requirements of low-voLTage apparatuses for plateau 特殊环境条件 高原用低压电器技术要求 |
China National Standards LT |
English PDF |
| GB/T 19420-2021 |
Terminology of saLT-making industry 制盐工业术语 |
China National Standards LT |
English PDF |
| GB/T 18802.32-2021 |
Low-voLTage surge protective devices—Part 32: Surge protective devices connected to photovoltaic installations—Selection and application principles 低压电涌保护器 第32部分：用于光伏系统的电涌保护器 选择和使用导则 |
China National Standards LT |
English PDF |
| GB/T 18802.31-2021 |
Low-voLTage surge protective devices -- Part 31: Surge protective devices connected to photovoltaic installations -- Requirements and test methods 低压电涌保护器 第31部分：用于光伏系统的电涌保护器 性能要求和试验方法 |
China National Standards LT |
English PDF |
| GB/T 18329.4-2021 |
Plain bearings—Metallic muLTilayer plain bearings—Part 4:Non-destructive ultrasonic transmission testing of bond of thickness greater than or equal to 0.3 mm 滑动轴承 多层金属滑动轴承 第4部分: 合金厚度≥0.3mm的结合质量超声穿透无损检测 |
China National Standards LT |
English PDF |
| GB/T 18329.3-2021 |
Plain bearings—Metallic muLTilayer plain bearings—Part 3: Non-destructive penetrant testing 滑动轴承 多层金属滑动轴承 第3部分：无损渗透检验 |
China National Standards LT |
English PDF |
| GB/T 14352.19-2021 |
Methods for chemical analysis of tungsten ores and molybdenum ores -- Part 19: Determination of bismuth, cadmium, cobaLT, copper, iron, lithium, nickel, phosphorus, lead, strontium, vanadium and zinc content -- Inductive-coupled plasma atomic emission spe 钨矿石、钼矿石化学分析方法 第19部分：铋、镉、钴、铜、铁、锂、镍、磷、铅、锶、钒和锌量的测定 电感耦合等离子体原子发射光谱法 |
China National Standards LT |
English PDF |
| GB/T 12736-2021 |
Conveyor beLTs—Determination of strenght of mechanical fastenings—Static test method 输送带 机械接头强度的测定 静态试验方法 |
China National Standards LT |
English PDF |
| GB/T 10001.6-2021 |
Public information graphical symbols—Part 6: Symbols for medical treatment and heaLTh care 公共信息图形符号 第6部分：医疗保健符号 |
China National Standards LT |
English PDF |
| GB/T 5755-2021 |
Steel cord conveyor beLTs—Cord-to-coating bond test—Initial test and after thermal treatment 钢丝绳芯输送带 绳与包覆胶粘合试验 原始状态下和热老化后试验 |
China National Standards LT |
English PDF |
| GB/T 5095.2507-2021 |
Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 25-7: Test 25g: Impedance, reflection coefficient, and voLTage standing wave ratio (VSWR) 电子设备用机电元件 基本试验规程及测量方法 第25-7部分：试验25g：阻抗、反射系数和电压驻波比（VSWR） |
China National Standards LT |
English PDF |
| GB/T 5095.2307-2021 |
Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 23-7: Screening and fiLTering tests—Test 23g: Effective transfer impedance of connectors 电子设备用机电元件 基本试验规程及测量方法 第23-7部分：屏蔽和滤波试验 试验23g：连接器的有效转移阻抗 |
China National Standards LT |
English PDF |
| GB/T 5095.2304-2021 |
Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 23-4: Screening and fiLTering tests—Test 23d: Transmission line reflections in the time domain 电子设备用机电元件 基本试验规程及测量方法 第23-4部分：屏蔽和滤波试验 试验23d：时域内传输线的反射 |
China National Standards LT |
English PDF |
| GB/T 5095.2303-2021 |
Electromechanical components for electronic equipment—Basic testing procedures and measuring methods—Part 23-3:Screening and fiLTering tests—Test 23c：Shielding effectiveness of connectors and accessories—Line injection method 电子设备用机电元件 基本试验规程及测量方法 第23-3部分：屏蔽和滤波试验 试验23c：连接器和附件的屏蔽效果 线注入法 |
China National Standards LT |
English PDF |
| GB/T 4490-2021 |
Conveyor beLTs with textile carcass—Widths and lengths 织物芯输送带 宽度和长度 |
China National Standards LT |
English PDF |
| GB/T 3684-2021 |
Conveyor beLTs—Electrical conductivity—Specification and test method 输送带 导电性 规范和试验方法 |
China National Standards LT |
English PDF |
| GB/T 2680-2021 |
Glass in building—Determination of light transmittance, solar direct transmittance, total solar energy transmittance, uLTraviolet transmittance and related glazing factors 建筑玻璃 可见光透射比、太阳光直接透射比、太阳能总透射比、紫外线透射比及有关窗玻璃参数的测定 |
China National Standards LT |
English PDF |
| GB/T 41165-2021 |
Accuracy evaluation methods of marine forecast resuLTs 海洋预报结果准确性检验评估方法 |
China National Standards LT |
English PDF |
| GB/T 9254.1-2021 |
Information technology equipment, muLTimedia equipment and receivers -- Electromagnetic compatibility -- Part 1: Emission requirements 信息技术设备、多媒体设备和接收机 电磁兼容 第1部分：发射要求 |
China National Standards LT |
English PDF |
| GB/T 15166.4-2021 |
High-voLTage alternating-current fuses -- Part 4：Fuse for exteanal protection of shunt capacitors 高压交流熔断器 第4部分：并联电容器外保护用熔断器 |
China National Standards LT |
English PDF |
| GB/T 41115-2021 |
Non-destructive testing of welds -- ULTrasonic testing -- Use of time-of-flight diffraction technique (TOFD) 焊缝无损检测 超声检测 衍射时差技术（TOFD）的应用 |
China National Standards LT |
English PDF |
| GB/T 41249-2021 |
Industrial assistance—Guidance for operation management of “pig-biogas-fruit (grain and vegetable)”circular agricuLTural project 产业帮扶 “猪-沼-果（粮、菜）” 循环农业项目运营管理指南 |
China National Standards LT |
English PDF |
| GB/T 5121.28-2021 |
Methods for chemical analysis of copper and copper alloys—Part 28：Determination of chromium,iron,manganese,cobaLT,nickel,zinc,arsenic,selenium,silver,cadmium,tin,antimony,tellurium,lead and bismuth content—Inductively coupled plasma-mass spectrometry 铜及铜合金化学分析方法 第28部分：铬、铁、锰、钴、镍、锌、砷、硒、银、镉、锡、锑、碲、铅和铋含量的测定 电感耦合等离子体质谱法 |
China National Standards LT |
English PDF |
| GB/T 2384-2021 |
Dyes intermediates—General method for the determination of meLTing range 染料中间体 熔点范围测定通用方法 |
China National Standards LT |
English PDF |
| GB/T 41164-2021 |
Specifications technology for muLTistage fracturing in horizontal well within roof of broken-soft and low permeability coal seam 碎软低渗煤层顶板水平井分段压裂技术规范 |
China National Standards LT |
English PDF |
| GB/T 41147-2021 |
VoLTage sourced converter(VSC) valves for static synchronous compensator(STATCOM) -- Electrical testing 静止同步补偿装置用电压源换流器阀 电气试验 |
China National Standards LT |
English PDF |
| GB/T 41114-2021 |
Non-destructive testing -- ULTrasonic testing -- Specification for a calibration block for phased array testing(PAUT) 无损检测? 超声检测 相控阵超声检测标准试块规范 |
China National Standards LT |
English PDF |
| GB/T 41105.3-2021 |
Non-destructive testing -- Measurement and evaluation of the X-ray tube voLTage -- Part 3: Spectrometric method 无损检测? X射线管电压的测量和评价 第3部分：能谱法 |
China National Standards LT |
English PDF |
| GB/T 41105.2-2021 |
Non-destructive testing -- Measurement and evaluation of the X-ray tube voLTage -- Part 2: Constancy check by the thick filter method 无损检测? X射线管电压的测量和评价 第2部分：厚板滤波法稳定性核查 |
China National Standards LT |
English PDF |
| GB/T 41105.1-2021 |
Non-destructive testing—Measurement and evaluation of the X-ray tube voLTage—Part 1:Voltage divider method 无损检测 X射线管电压的测量和评价 第1部分：分压法 |
China National Standards LT |
English PDF |
| GB/T 10395.5-2021 |
AgricuLTural machinery -- Safety -- Part 5: Power-driven soil-working machines 农业机械 安全 第5部分：驱动式耕作机械 |
China National Standards LT |
English PDF |
| GB/T 41135.2-2021 |
Current and voLTage sensors or detectors, to be used for fault passage indication purposes -- Part 2: System aspects 故障路径指示用电流和电压传感器或探测器?? 第2部分：系统应用 |
China National Standards LT |
English PDF |
| GB/T 41135.1-2021 |
Current and voLTage sensors or detectors, to be used for fault passage indication purposes -- Part 1: General principles and requirements 故障路径指示用电流和电压传感器或探测器?? 第1部分：通用原理和要求 |
China National Standards LT |
English PDF |
| GB/T 22473.1-2021 |
Batteries used for energy storage -- Part 1: PhotovoLTaic off-grid application technical conditions 储能用蓄电池? 第1部分：光伏离网应用技术条件 |
China National Standards LT |
English PDF |
| GB/T 999-2021 |
VoLTage ratings of DC electric traction system 直流电力牵引额定电压 |
China National Standards LT |
English PDF |
| GB/T 41064-2021 |
Surface chemical analysis—Depth profiling—Method for sputter rate determination in X-ray photoelectron spectroscopy, Auger electron spectroscopy and secondary-ion mass spectrometry sputter depth profiling using single and muLTi-layer thin films 表面化学分析 深度剖析 用单层和多层薄膜测定X射线光电子能谱、俄歇电子能谱和二次离子质谱中深度剖析溅射速率的方法 |
China National Standards LT |
English PDF |
| GB/T 41154-2021 |
Metallic materials—MuLTiaxial fatigue testing—Axial-torsional strain-controlled thermo-mechanical fatigue testing method 金属材料 多轴疲劳试验 轴向-扭转应变控制热机械疲劳试验方法 |
China National Standards LT |
English PDF |
| GB/T 41125-2021 |
AgricuLTural machinery -- Equipment for sowing -- Minimization of the environmental effects of fan exhaust from pneumatic systems 农业机械? 播种机? 减少气力系统风机排气对环境的影响 |
China National Standards LT |
English PDF |
| GB/T 37863.2-2021 |
Railway applications—Traction electric drive system—Part 2: Locomotive and muLTiple unit 轨道交通 牵引电传动系统 第2部分：机车、动车组 |
China National Standards LT |
English PDF |
| GB/T 41092-2021 |
Guidance for electrical safety risk assessment and risk reduction in muLTiple application workplace 多重应用环境场所电气安全风险评估和风险降低指南 |
China National Standards LT |
English PDF |
| GB/T 9254.2-2021 |
Information technology equipment, muLTimedia equipment and receivers -- Electromagnetic compatibility -- Part 2: Immunity requirements 信息技术设备、多媒体设备和接收机 电磁兼容 第2部分：抗扰度要求 |
China National Standards LT |
English PDF |
| GB/T 26018-2021 |
High purity cobaLT 高纯钴 |
China National Standards LT |
English PDF |
| GB/T 8-2021 |
Square head boLTs -- Product grade C 方头螺栓 C级 |
China National Standards LT |
English PDF |
| GB/T 801-2021 |
Cup head square neck boLTs with small head and short neck—Product grade B 小半圆头低方颈螺栓 B级 |
China National Standards LT |
English PDF |
| GB/T 798-2021 |
Eye boLTs 活节螺栓 |
China National Standards LT |
English PDF |
| GB/T 794-2021 |
Strenthened cup head square neck boLTs 加强半圆头方颈螺栓 |
China National Standards LT |
English PDF |
| GB/T 41065-2021 |
BasaLT fiber -- Determination of combustible matter content 玄武岩纤维 可燃物含量的测定 |
China National Standards LT |
English PDF |
| GB/T 21421.1-2021 |
Composite string insulator units for overhead lines with a nominal voLTage greater than 1 000 V—Part 1：Standard strength classes and end fittings 标称电压高于1 000V的架空线路用复合绝缘子串元件 第1部分：标准强度等级和端部装配件 |
China National Standards LT |
English PDF |
| GB/T 1001.1-2021 |
Insulators for overhead lines with a nominal voLTage above 1 000V—Part 1:Ceramic or glass insulator units for a.c.systems—Definitions,test methods and acceptance criteria 标称电压高于1 000V的架空线路绝缘子 第1部分：交流系统用瓷或玻璃绝缘子元件 定义、试验方法和判定准则 |
China National Standards LT |
English PDF |
| GB/T 18691.5-2021 |
AgricuLTural irrigation equipment -- Irrigation valves -- Part 5: Control valves 农业灌溉设备 灌溉阀 第5部分：控制阀 |
China National Standards LT |
English PDF |
| GB/T 18691.4-2021 |
AgricuLTural irrigation equipment—Irrigation valves—Part 4: Air valves 农业灌溉设备 灌溉阀 第4部分：进排气阀 |
China National Standards LT |
English PDF |
| GB/T 18691.3-2021 |
AgricuLTural irrigation equipment—Irrigation valves—Part 3: Check valves 农业灌溉设备 灌溉阀 第3部分：止回阀 |
China National Standards LT |
English PDF |
| GB/T 18691.2-2021 |
AgricuLTural irrigation equipment—Irrigation valves—Part 2: Isolating valves 农业灌溉设备 灌溉阀 第2部分：隔离阀 |
China National Standards LT |
English PDF |
| GB/T 18691.1-2021 |
AgricuLTural irrigation equipment—Irrigation valves—Part 1：General requirements 农业灌溉设备 灌溉阀 第1部分：通用要求 |
China National Standards LT |
English PDF |
| GB/T 8618-2021 |
Sampling methods of the main products in saLT making industry 制盐工业主要产品取样方法 |
China National Standards LT |
English PDF |
| GB/T 20882.6-2021 |
Quality requirements for starch sugar—Part 6:MaLTodextrin 淀粉糖质量要求 第6部分：麦芽糊精 |
China National Standards LT |
English PDF |
| GB/T 41187-2021 |
Application service for agricuLTural internet of things 农业物联网应用服务 |
China National Standards LT |
English PDF |
| GB/T 24551-2021 |
Safety beLT reminder for motor vehicles 汽车安全带提醒装置 |
China National Standards LT |
English PDF |
| GB/T 26978-2021 |
Design and manufacture of site buiLT, vertical, cylindrical, flat-bottomed steel tanks for the storage of cryogenic liquefied gas 现场组装立式圆筒平底钢质低温液化气储罐的设计与建造 |
China National Standards LT |
English PDF |
| GB/T 41072-2021 |
Surface chemical analysis -- Electron spectroscopies -- Guidelines for uLTraviolet photoelectron spectroscopy analysis 表面化学分析 电子能谱 紫外光电子能谱分析指南 |
China National Standards LT |
English PDF |
| GB/T 40950-2021 |
Determination of alkyl(C12～C22) trimethyl ammonium saLT in cosmetics—High performance liquid chromatography tandem mass spectrometry 化妆品中烷基(C12～C22)三甲基铵盐的测定 高效液相色谱串联质谱法 |
China National Standards LT |
English PDF |
| GB/T 40895-2021 |
Determination of prohibited tetracaine and its saLTs in cosmetics—Ion chromatography 化妆品中禁用物质丁卡因及其盐类的测定 离子色谱法 |
China National Standards LT |
English PDF |
| GB/T 40898-2021 |
Determination of prohibited bemegride and its saLTs in cosmetics—High performance liquid chromatography 化妆品中禁用物质贝美格及其盐类的测定 高效液相色谱法 |
China National Standards LT |
English PDF |
| GB/T 40945-2021 |
Code of practice for quality grading of livestock and pouLTry meat 畜禽肉质量分级规程 |
China National Standards LT |
English PDF |
| GB/T 40994-2021 |
Smart city -- Intelligent muLTifunctional pole -- Specifications for service functionality and operation management 智慧城市 智慧多功能杆 服务功能与运行管理规范 |
China National Standards LT |
English PDF |
| GB/T 40922-2021 |
Telemark ski-boots for aduLTs—Interface with Telemark ski-bindings—Requirements and test methods 成人特里马滑雪靴 特里马滑雪板固定器接口 要求和试验方法 |
China National Standards LT |
English PDF |
| GB/T 40930-2021 |
Touring ski-boots for aduLTs—Interface with touring ski-bindings—Requirements and test methods 成人旅行滑雪靴 旅行滑雪板固定器接口 要求和试验方法 |
China National Standards LT |
English PDF |
| GB/T 40681.6-2021 |
Statistical methods in monitoring process capability and performance—Part 6:Process capability statistics for characteristics following a muLTivariate normal distribution 生产过程能力和性能监测统计方法 第6部分：多元正态过程能力分析 |
China National Standards LT |
English PDF |
| GB/T 16895.33-2021 |
Low-voLTage electrical installations—Part 5-56:Selection and erection of electrical equipment—Safety services 低压电气装置 第5-56部分：电气设备的选择和安装 安全设施 |
China National Standards LT |
English PDF |
| GB/T 17874-2021 |
Electronic speciaLTy gas—Boron trichloride 电子特气 三氯化硼 |
China National Standards LT |
English PDF |
| GB/T 40734-2021 |
Non-destructive testing of welds—Phased array uLTrasonic testing(PAUT)—Acceptance levels 焊缝无损检测 相控阵超声检测 验收等级 |
China National Standards LT |
English PDF |
| GB/T 40733-2021 |
Non-destructive testing of welds—ULTrasonic testing—Use of automated phased array technology 焊缝无损检测 超声检测 自动相控阵超声技术的应用 |
China National Standards LT |
English PDF |
| GB/T 16895.10-2021 |
Low-voLTage electrical installations -- Part 4-44: Protection for safety -- Protection against voltage disturbances and electromagnetic disturbances 低压电气装置 第4-44部分：安全防护 电压骚扰和电磁骚扰防护 |
China National Standards LT |
English PDF |
| GB/T 19334-2021 |
Dimensions of low-voLTage switchgear and controlgear—Standardized mounting on rails for mechanical support of switchgear,controlgear and accessories 低压开关设备和控制设备的尺寸 在开关设备和控制设备及其附件中作机械支承的标准安装轨 |
China National Standards LT |
English PDF |
| GB/T 40616-2021 |
Technical requirements for simulation test of control system functions of the rural photovoLTaic power station cluster 村镇光伏发电站集群控制系统仿真测试技术要求 |
China National Standards LT |
English PDF |
| GB/T 40732-2021 |
Non-destructive testing of welds—ULTrasonic testing—Testing of welds in austenitic steels and nickel-based alloys 焊缝无损检测 超声检测 奥氏体钢和镍基合金焊缝检测 |
China National Standards LT |
English PDF |
| GB/T 40841-2021 |
Cross-border E-commerce—Guidelines on exchange of product quality evaluation resuLT 跨境电子商务 产品质量评价结果交换指南 |
China National Standards LT |
English PDF |
| GB/T 30845.2-2021 |
Plugs, socket-outlets and ship couplers for high-voLTage shore connection systems (HVSC-systems)—Part 2: Dimensional compatibility and interchangeability requirements for accessories to be used by various types of ships 高压岸电连接系统(HVSC系统)用插头、插座和船用耦合器 第2部分：不同类型的船舶用附件的尺寸兼容性和互换性要求 |
China National Standards LT |
English PDF |
| GB/T 40607-2021 |
Technical requirements for dispatching side forecasting system of wind or photovoLTaic power 调度侧风电或光伏功率预测系统技术要求 |
China National Standards LT |
English PDF |
| GB/T 40588-2021 |
Technical provisions for automatic under-voLTage load shedding in electric power systems 电力系统自动低压减负荷技术规定 |
China National Standards LT |
English PDF |
| GB/T 40427-2021 |
Technical guidelines for power system voLTage and reactive power 电力系统电压和无功电力技术导则 |
China National Standards LT |
English PDF |
| GB/T 40615-2021 |
Guides of power system voLTage stability evaluation 电力系统电压稳定评价导则 |
China National Standards LT |
English PDF |
| GB/T 40905.1-2021 |
Textiles -- Quantitative analysis of cashmere, wool, other speciaLTy animal fibres and their blends -- Part 1: Light microscopy method 纺织品 山羊绒、绵羊毛、其他特种动物纤维及其混合物定量分析 第1部分：光学显微镜法 |
China National Standards LT |
English PDF |
| GB/T 6683.1-2021 |
Petroleum and related products—Precision of measurement methods and resuLTs—Part 1: Determination of precision data in relation to methods of test 石油及相关产品 测量方法与结果精密度 第1部分：试验方法精密度数据的确定 |
China National Standards LT |
English PDF |
| GB/T 40730-2021 |
Non-destructive testing -- Measuring thickness by electromagnetic uLTrasonic pulse-echo 无损检测 电磁超声脉冲回波式测厚方法 |
China National Standards LT |
English PDF |
| GB/T 1232.3-2021 |
Rubber,unvulcanized—Determinations using a shearing-disc viscometer—Part 3:Determination of the DeLTa Mooney value for non-pigmented,oil-extended emulsion-polymerized SBR 未硫化橡胶 用圆盘剪切黏度计进行测定 第3部分：无填料的充油乳液聚合型苯乙烯-丁二烯橡胶Delta门尼值的测定 |
China National Standards LT |
English PDF |
| GB/T 40917-2021 |
Textiles—Determination of perfluorohexane-1-sulphonic acid and its saLTs 纺织品 全氟己烷磺酸及其盐类的测定 |
China National Standards LT |
English PDF |
| GB/T 14824-2021 |
High-voLTage alternating-current generator circuit-breakers 高压交流发电机断路器 |
China National Standards LT |
English PDF |
| GB/T 21287-2021 |
Electronic speciaLTy gas—Nitrogen trifluoride 电子特气 三氟化氮 |
China National Standards LT |
English PDF |
| GB/T 16277-2021 |
Road construction and maintenance machinery and equipment—AsphaLT paver 道路施工与养护机械设备 沥青混凝土摊铺机 |
China National Standards LT |
English PDF |
| GB/T 17808-2021 |
Road construction and maintenance machinery and equipment—AsphaLT mixing plant 道路施工与养护机械设备 沥青混合料搅拌设备 |
China National Standards LT |
English PDF |
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