China National Standards

China systems 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 "systems" GB Standards English PDF List:
  • Standard  Code Standard Title Standard Class Order
    GB/T 37227.1-2018 Evaluation method and testing method for energy performance of refrigerating systems-Part 1:Energy-storage air conditioning systems
    制冷系统绩效评价与计算测试方法-第1部分:蓄能空调系统
    China National Standards
    systems

    English PDF
    GB/T 37033.3-2018 Information security technology—Technical requirements for cryptographic application for radio frequency identification systems—Part 3: Technical requirements for key management
    信息安全技术-射频识别系统密码应用技术要求-第3部分:密钥管理技术要求
    China National Standards
    systems

    English PDF
    GB/T 37033.2-2018 Information security technology—Technical requirements for cryptographic application for radio frequency identification systems—Part 2: Technical requirements for cryptographic application for RF tag, reader and communication
    信息安全技术-射频识别系统密码应用技术要求-第2部分:电子标签与读写器及其通信密码应用技术要求
    China National Standards
    systems

    English PDF
    GB/T 37033.1-2018 Information security technology—Technical requirements for cryptographic application for radio frequency identification systems—Part 1: Cryptographic protection framework and security levels
    信息安全技术-射频识别系统密码应用技术要求-第1部分:密码安全保护框架及安全级别
    China National Standards
    systems

    English PDF
    GB/T 37095-2018 Information security technology—Security basic technical requirements for office information systems
    信息安全技术-办公信息系统安全基本技术要求
    China National Standards
    systems

    English PDF
    GB/T 37094-2018 Information security technology—Security management requirements for office information systems
    信息安全技术-办公信息系统安全管理要求
    China National Standards
    systems

    English PDF
    GB/T 37096-2018 Information security technology—Security testing specification for office information systems
    信息安全技术-办公信息系统安全测试规范
    China National Standards
    systems

    English PDF
    GB/T 36935-2018 Footwear—Conversion of sizing systems
    鞋类-鞋号对照表
    China National Standards
    systems

    English PDF
    GB/T 36896.2-2018 Light duty remotely operated vehicles—Part 2:Manipulators and hydraulic systems
    轻型有缆遥控水下机器人-第2部分:机械手与液压系统
    China National Standards
    systems

    English PDF
    GB/T 786.2-2018 Fluid power systems and components—Graphical symbols and circuit diagrams—Part 2: Circuit diagrams
    流体传动系统及元件-图形符号和回路图-第2部分:回路图
    China National Standards
    systems

    English PDF
    GB/T 2348-2018 Fluid power systems and components—Cylinder bores and piston rod diameters
    流体传动系统及元件-缸径及活塞杆直径
    China National Standards
    systems

    English PDF
    GB/T 37047-2018 Lightning density based on lightning location systems(LLS)—General principles
    基于雷电定位系统(LLS)的地闪密度-总则
    China National Standards
    systems

    English PDF
    GB/T 36963-2018 Technical specifications for lightning protection of building integrated photovoltaic systems
    光伏建筑一体化系统防雷技术规范
    China National Standards
    systems

    English PDF
    GB/T 37137-2018 On-site inspections method of a.c.circuit systems for 220 kV substations on plateau
    高原220kV变电站交流回路系统现场检验方法
    China National Standards
    systems

    English PDF
    GB/T 37048-2018 Technical specification for lightning protection of expressway electromechanical systems
    高速公路机电系统防雷技术规范
    China National Standards
    systems

    English PDF
    GB/T 37128-2018 Technical requirements for X-ray computed tomography security inspection systems
    X射线计算机断层成像安全检查系统技术要求
    China National Standards
    systems

    English PDF
    GB/T 6809.10-2018 Reciprocating internal combustion engines—Vocabulary of components and systems—Part 10: Ignition systems
    往复式内燃机-零部件和系统术语-第10部分:点火系统
    China National Standards
    systems

    English PDF
    GB/T 35451.2-2018 Polypropylene(PP) structure-wall piping systems for underground drainage and sewerage—Part 2: Polypropylene spirally enwound structure-wall pipes
    埋地排水排污用聚丙烯(PP)结构壁管道系统-第2部分:聚丙烯缠绕结构壁管材
    China National Standards
    systems

    English PDF
    GB/T 31070.2-2018 Building intercom systems—Part 2: Technical requirements for digital building intercom systems
    楼寓对讲系统-第2部分:全数字系统技术要求
    China National Standards
    systems

    English PDF
    GB/T 16855.1-2018 Safety of machinery—Safety-related parts of control systems—Part 1: General principles for design
    机械安全-控制系统安全相关部件-第1部分:设计通则
    China National Standards
    systems

    English PDF
    GB/T 28026.2-2018 Railway applications—Fixed installations—Electrical safety,earthing and the return circuit—Part 2:Provisions against the effects of stray currents caused by d.c. traction systems
    轨道交通-地面装置-电气安全、接地和回流-第2部分:直流牵引供电系统杂散电流的防护措施
    China National Standards
    systems

    English PDF
    GB/T 21152-2018 Earth-moving machinery—Wheeled or high-speed rubber-tracked machines—Performance requirements and test procedures for brake systems
    土方机械-轮式或高速橡胶履带式机器-制动系统的性能要求和试验方法
    China National Standards
    systems

    English PDF
    GB 51309-2018 Technical standards for fire emergency lighting and evacuation indication systems
    消防应急照明和疏散指示系统技术标准
    China National Standards
    systems

    English PDF
    GB/T 37126-2018 Test method for structural sealant glazing systems(SSGS)
    结构装配用建筑密封胶试验方法
    China National Standards
    systems

    English PDF
    GB/T 31070.4-2018 Building intercom systems—Part 4: Application guidelines
    楼寓对讲系统-第4部分:应用指南
    China National Standards
    systems

    English PDF
    GB/T 23003-2018 Integration of informatization and industrialization management systems—Assessment guidance
    信息化和工业化融合管理体系-评定指南
    China National Standards
    systems

    English PDF
    GB 50364-2018 Technical standards for application of solar water heating systems for civil buildings
    民用建筑太阳能热水系统应用技术标准
    China National Standards
    systems

    English PDF
    GB/T 36147.2-2018 Security management systems for the supply chain—Electronic port clearance(EPC)—Part 2:Core data elements
    供应链安全管理系统 电子口岸通关(EPC) 第2部分:核心数据元
    China National Standards
    systems

    English PDF
    GB/T 36147.1-2018 Security management systems for the supply chain—Electronic port clearance(EPC)—Part 1: Message structures
    供应链安全管理系统 电子口岸通关(EPC) 第1部分:消息结构
    China National Standards
    systems

    English PDF
    GB/T 36216-2018 Ships and marine technology—Ship recycling management systems—Measures to prevent asbestos emission and exposure during ship recycling
    船舶与海上技术 拆船管理体系 拆船过程中防止石棉发散和暴露的措施
    China National Standards
    systems

    English PDF
    GB/T 36215-2018 Ships and marine technology—Ship recycling management systems—Information control for hazardous materials in the manufacturing chain of shipbuilding and ship operations
    船舶与海上技术 拆船管理体系 造船和船舶营运环节中有害物质的信息管理
    China National Standards
    systems

    English PDF
    GB/T 36208-2018 Anticorrosion lining technical requirements and procedure evaluation for industrial exhaust gas systems
    工业烟气排放系统防腐衬里技术要求及评价方法
    China National Standards
    systems

    English PDF
    GB/T 36469-2018 Information technology—Telecommunications and information exchange between systems local and metropolitan area networks—Specific requirements—Medium access control (MAC) and physical layer (PHY) specification for Q frequency band ultra high speed wi
    信息技术 系统间远程通信和信息交换局域网和城域网 特定要求 Q波段超高速无线局域网媒体访问控制和物理层规范
    China National Standards
    systems

    English PDF
    GB/T 36470-2018 Information security technology—Common security functional requirements for data acquisition and control field devices of industrial control systems
    信息安全技术 工业控制系统现场测控设备通用安全功能要求
    China National Standards
    systems

    English PDF
    GB/T 34542.2-2018 Storage and transportation systems for gaseous hydrogen—Part 2: Test methods for evaluating metallic material compatibility in hydrogen atmosphere
    氢气储存输送系统 第2部分:金属材料与氢环境相容性试验方法
    China National Standards
    systems

    English PDF
    GB/T 34542.3-2018 Storage and transportation systems for gaseous hydrogen—Part 3: Test method for determination of the susceptibility of metallic materials to hydrogen gas embrittlement (HGE)
    氢气储存输送系统 第3部分:金属材料氢脆敏感度试验方法
    China National Standards
    systems

    English PDF
    GB/T 24338.6-2018 Railway applications—Electromagnetic compatibility—Part 5: Emission and immunity of fixed power supply apparatus and systems
    轨道交通 电磁兼容 第5部分:地面供电设备和系统的发射与抗扰度
    China National Standards
    systems

    English PDF
    GB/T 35071-2018 Guideline for energy systems optimization
    能量系统优化导则
    China National Standards
    systems

    English PDF
    GB/T 36173-2018 Restrained joint systems for ductile iron pipelines—Design rules and type testing
    球墨铸铁管线用自锚接口系统 设计规定和型式试验
    China National Standards
    systems

    English PDF
    GB/T 36466-2018 Information security technology—Implementation guide to risk assessment of industrial control systems
    信息安全技术 工业控制系统风险评估实施指南
    China National Standards
    systems

    English PDF
    GB/T 21671-2018 Ethernet technology based local area network(LAN) systems acceptance test methods
    基于以太网技术的局域网(LAN)系统验收测试方法
    China National Standards
    systems

    English PDF
    GB/T 36454-2018 Information technology—Telecommunications and information exchange between systems—Medium access control and physical layer specifications for middle-high throughput wireless local area network
    信息技术 系统间远程通信和信息交换 中高速无线局域网媒体访问控制和物理层规范
    China National Standards
    systems

    English PDF
    GB/T 22137.2-2018 Valve positioners for industrial process control systems—Part 2: Methods of evaluating the performance of intelligent valve positioners
    工业过程控制系统用阀门定位器 第2部分:智能阀门定位器性能评定方法
    China National Standards
    systems

    English PDF
    GB/T 36451-2018 Information technology—Telecommunications and information exchange between systems—Community energy-saving control network protocol
    信息技术 系统间远程通信和信息交换 社区节能控制网络协议
    China National Standards
    systems

    English PDF
    GB/T 25975-2018 Rock wool products for external thermal insulation composite systems (ETICS)
    建筑外墙外保温用岩棉制品
    China National Standards
    systems

    English PDF
    GB/T 36467-2018 Reliability growth—Stress testing for early failures in unique complex systems
    可靠性增长 特定复杂系统的早期失效应力试验
    China National Standards
    systems

    English PDF
    GB/T 5094.2-2018 Industrial systems, installations and equipment and industrial products-Structuring principles and reference designations—Part 2: Classification of objects and codes for classes
    工业系统、装置与设备以及工业产品 结构原则与参照代号 第2部分:项目的分类与分类码
    China National Standards
    systems

    English PDF
    GB/T 5094.1-2018 Industrial systems,installations and equipment and industrial products—Structuring principles and reference designations—Part 1: Basic rules
    工业系统、装置与设备以及工业产品 结构原则与参照代号 第1部分:基本规则
    China National Standards
    systems

    English PDF
    GB/T 36546-2018 Intrusion and hold-up systems—Technical requirements for warning devices
    入侵和紧急报警系统 告警装置技术要求
    China National Standards
    systems

    English PDF
    GB 5135.7-2018 Automatic sprinkler systems—Part 7: Water flow indicators
    自动喷水灭火系统 第7部分:水流指示器
    China National Standards
    systems

    English PDF
    GB/T 17948.6-2018 Rotating electrical machines—Functional evaluation of insulation systems—Test procedures for form-wound windings—Evaluation of thermomechanical endurance of insulation systems
    旋转电机 绝缘结构功能性评定 成型绕组试验规程 绝缘结构热机械耐久性评定
    China National Standards
    systems

    English PDF
    GB/T 36482-2018 Ships and marine technology—Ship recycling management systems—Guidelines for the implementation of GB/T 33800
    船舶与海上技术 拆船管理体系 GB/T 33800实施导则
    China National Standards
    systems

    English PDF
    GB/T 17948.1-2018 Rotating electrical machines—Functional evaluation of insulation systems—Test procedures for wire-wound windings—Thermal evaluation and classification
    旋转电机 绝缘结构功能性评定 散绕绕组试验规程 热评定和分级
    China National Standards
    systems

    English PDF
    GB 5135.5-2018 Automatic sprinkler systems—Part 5: Deluge alarm valves
    自动喷水灭火系统 第5部分:雨淋报警阀
    China National Standards
    systems

    English PDF
    GB/T 30996.3-2018 Information technology—Real-time locating systems—Part 3 : 433MHz air interface protocol
    信息技术 实时定位系统 第3部分:433MHz空中接口协议
    China National Standards
    systems

    English PDF
    GB/T 17614.3-2018 Transmitters for use in industrial-process control systems—Part 3: Methods for performance evaluation of intelligent transmitters
    工业过程控制系统用变送器 第3部分:智能变送器性能评定方法
    China National Standards
    systems

    English PDF
    GB/T 36440-2018 Information technology—Telecommunications and information exchange between systems local and metropolitan area networks—Specific requirements—Low-rate wireless personal area network physical layer(PHY) specification for anti-interference
    信息技术 系统间远程通信和信息交换局域网和城域网 特定要求 抗干扰低速无线个域网物理层规范
    China National Standards
    systems

    English PDF
    GB/T 36443-2018 Information technology—Framework for specifying a common access profile(CAP) of needs and capabilities of users,systems and their environments
    信息技术 用户、系统及其环境的需求和能力的公共访问轮廓(CAP) 框架
    China National Standards
    systems

    English PDF
    GB/T 36444-2018 Information technology—Open systems interconnection—Simple directory protocol and service
    信息技术 开放系统互连 简化目录协议及服务
    China National Standards
    systems

    English PDF
    GB/T 36323-2018 Information security technology—Security management fundamental requirements for industrial control systems
    信息安全技术 工业控制系统安全管理基本要求
    China National Standards
    systems

    English PDF
    GB/T 36324-2018 Information security technology—Information security classification specifications of industrial control systems
    信息安全技术 工业控制系统信息安全分级规范
    China National Standards
    systems

    English PDF
    GB/T 25102.12-2018 Electroacoustics—Hearing aids—Part 12: Dimensions of electrical connector systems
    电声学 助听器 第12部分:电连接器系统的尺寸
    China National Standards
    systems

    English PDF
    GB/T 36626-2018 Information security technology—Management guide for secure operation and maintenance of information systems
    信息安全技术 信息系统安全运维管理指南
    China National Standards
    systems

    English PDF
    GB/T 36628.1-2018 Information technology—Telecommunications and information exchange between systems—Visible light communication—Part 1:General requirements of media access control and physical layer
    信息技术 系统间远程通信和信息交换 可见光通信 第1部分:媒体访问控制和物理层总体要求
    China National Standards
    systems

    English PDF
    GB/T 36713-2018 Energy management systems—Energy baselines and energy performance indicators
    能源管理体系 能源基准和能源绩效参数
    China National Standards
    systems

    English PDF
    GB/T 36585-2018 Method of dynamic wind uplift test for external thermal insulation composite systems
    外墙外保温系统动态风压试验方法
    China National Standards
    systems

    English PDF
    GB/T 36583-2018 Determination of the resistance to penetration of external thermal insulation composite systems
    外墙外保温系统抗穿透性测试方法
    China National Standards
    systems

    English PDF
    GB/T 26857.4-2018 Information technology—Open systems interconnection—Methods for testing and specification(MTS)—The testing and test control notation—Version 3一Part 4: TTCN-3 operational semantics
    信息技术 开放系统互连 测试方法和规范(MTS) 测试和测试控制记法 第3版 第4部分:TTCN-3操作语义
    China National Standards
    systems

    English PDF
    GB/T 28766-2018 Natural gas—Performance evaluation for analytical systems
    天然气 分析系统性能评价
    China National Standards
    systems

    English PDF
    GB/T 25686-2018 Earth-moving machinery—Safety requirements for remote operator control systems
    土方机械 司机遥控装置的安全要求
    China National Standards
    systems

    English PDF
    GB 5135.6-2018 Automatic sprinkler systems—Part 6: Conventional valves
    自动喷水灭火系统 第6部分:通用阀门
    China National Standards
    systems

    English PDF
    GB/T 13663.3-2018 Polyethylene(PE)piping systems for water supply—Part 3: Fittings
    给水用聚乙烯(PE)管道系统 第3部分:管件
    China National Standards
    systems

    English PDF
    GB/T 16895.34-2018 Low-voltage electrical installations—Part 7-753: Requirements for special installations or locations—Heating cables and embedded heating systems
    低压电气装置 第7-753 部分:特殊装置或场所的要求 加热电缆及埋入式加热系统
    China National Standards
    systems

    English PDF
    GB/T 13663.5-2018 Polyethylene (PE) piping systems for water supply—Part 5: Fitness for purpose of the system
    给水用聚乙烯(PE)管道系统 第5部分:系统适用性
    China National Standards
    systems

    English PDF
    GB/T 13663.2-2018 Polyethylene(PE) piping systems for water supply—Part2: Pipes
    给水用聚乙烯(PE)管道系统 第2部分:管材
    China National Standards
    systems

    English PDF
    GB/T 6111-2018 Thermoplastics piping systems for the conveyance of fluids—Determination of the resistance to internal pressure
    流体输送用热塑性塑料管道系统 耐内压性能的测定
    China National Standards
    systems

    English PDF
    GB/T 20501.4-2018 Public information guidance systems—Design principles and requirements for guidance elements—Part 4: Street guidance map
    公共信息导向系统 导向要素的设计原则与要求 第4部分:街区导向图
    China National Standards
    systems

    English PDF
    GB/T 36005-2018 Measuring methods of optical radiation safety for semiconductor lighting equipments and systems
    半导体照明设备和系统的光辐射安全测试方法
    China National Standards
    systems

    English PDF
    GB/T 36050-2018 Rules of time synchronization for power systems
    电力系统时间同步基本规定
    China National Standards
    systems

    English PDF
    GB/T 7247.2-2018 Safety of laser products—Part 2: Safety of optical fibre communication systems (OFCS)
    激光产品的安全 第2部分:光纤通信系统(OFCS)的安全
    China National Standards
    systems

    English PDF
    GB/T 35850.1-2018 Programmable electronic systems in safety-related applications for lifts (elevators), escalators and moving walks—Part 1: Lifts (elevators) (PESSRAL)
    电梯、自动扶梯和自动人行道安全相关的可编程电子系统的应用 第1部分:电梯(PESSRAL)
    China National Standards
    systems

    English PDF
    GB/T 21412.6-2018 Petroleum and natural gas industries—Design and operation of subsea production systems—Part 6:Subsea production control systems
    石油天然气工业 水下生产系统的设计与操作 第6部分:水下生产控制系统
    China National Standards
    systems

    English PDF
    GB/T 21412.7-2018 Petroleum and natural gas industries—Design and operation of subsea production systems—Part 7:Completion/workover riser systems
    石油天然气工业 水下生产系统的设计与操作 第7部分:完井或修井隔水管系统
    China National Standards
    systems

    English PDF
    GB/T 9237-2017 Refrigerating systems and heat pumps—Safety and environmental requirements + No.2 modification sheet
    制冷系统及热泵 安全与环境要求+《第2号修改单》
    China National Standards
    systems

    English PDF
    GB/T 17948.3-2017 Rotating electrical machines—Functional evaluation of insulation systems—Test procedures for form-wound windings—Thermal evaluation and classification of insulation systems used in rotating machines
    旋转电机 绝缘结构功能性评定 成型绕组试验规程 旋转电机绝缘结构热评定和分级
    China National Standards
    systems

    English PDF
    GB/T 22720.1-2017 Rotating electrical machines—Qualification and quality control tests of partial discharge free electrical insulation systems (Type I) used in rotating electrical machines fed from voltage converters
    旋转电机 电压型变频器供电的旋转电机无局部放电(Ⅰ型)电气绝缘结构的鉴别和质量控制试验
    China National Standards
    systems

    English PDF
    GB/Z 17625.14-2017 Electromagnetic compatibility—Limits—Assessment of emission limits for harmonics, interharmonics,voltage fluctuations and unbalance for the connection of disturbing installations to LV power systems
    电磁兼容 限值 骚扰装置接入低压电力系统的谐波、间谐波、电压波动和不平衡的发射限值评估
    China National Standards
    systems

    English PDF
    GB/Z 17625.15-2017 Electromagnetic compatibility—Limits—Assessment of low frequency electromagnetic immunity and emission requirements for dispersed generation systems in LV network
    电磁兼容 限值 低压电网中分布式发电系统低频电磁抗扰度和发射要求的评估
    China National Standards
    systems

    English PDF
    GB/T 34940.3-2017 Static transfer systems(STS)—Part 3: Method for specifying performance and test requirements
    静态切换系统(STS) 第3部分:确定性能的方法和试验要求
    China National Standards
    systems

    English PDF
    GB/T 34934-2017 Electrcial safety of machinery—Guidelines for the use of communication systems in safety-related applications
    机械电气安全 安全相关设备中的通信系统使用指南
    China National Standards
    systems

    English PDF
    GB/T 19443-2017 Insulators for overhead lines with a nominal voltage above 1500V—Ceramic or glass insulator units for d.c. systems—Definitions,test methods and acceptance criteria
    标称电压高于1500V的架空线路用绝缘子 直流系统用瓷或玻璃绝缘子串元件 定义、试验方法及接收准则
    China National Standards
    systems

    English PDF
    GB/T 34937-2017 Insulators for overhead lines—Composite suspension and tension insulators for d.c.systems with a nominal voltage greater than 1500 V—Definitions, test methods and acceptance criteria
    架空线路绝缘子 标称电压高于1500 V直流系统用悬垂和耐张复合绝缘子 定义、试验方法及接收准则
    China National Standards
    systems

    English PDF
    GB/T 34940.2-2017 Static transfer systems(STS)—Part 2: Electromagnetic compatibility(EMC) requirements
    静态切换系统(STS) 第2部分:电磁兼容性(EMC)要求
    China National Standards
    systems

    English PDF
    GB/T 34940.1-2017 Static transfer systems(STS)—Part 1: General and safety requirements
    静态切换系统(STS) 第1部分:总则和安全要求
    China National Standards
    systems

    English PDF
    GB/T 13539.3-2017 Low-voltage fuses—Part 3: Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household and similar applications)—Examples of standardized systems of fuses A to F
    低压熔断器 第3部分: 非熟练人员使用的熔断器的补充要求 (主要用于家用和类似用途的熔断器) 标准化熔断器系统示例A至F
    China National Standards
    systems

    English PDF
    GB/T 25000.24-2017 systems and software engineering—Systems and software Quality Requirements and Evaluation(SQuaRE)—Part 24: Measurement of data quality
    系统与软件工程 系统与软件质量要求和评价(SQuaRE) 第24部分:数据质量测量
    China National Standards
    systems

    English PDF
    GB/T 34955-2017 Atmospheric radiation effects—Guidelines for single event effects testing for avionics systems
    大气辐射影响 航空电子系统单粒子效应试验指南
    China National Standards
    systems

    English PDF
    GB/T 34925-2017 On-site inspections method of a.c. circuit systems for 110 kV substations on plateau
    高原110 kV变电站交流回路系统现场检验方法
    China National Standards
    systems

    English PDF
    GB/T 16857.5-2017 Geometrical product specifications(GPS)—Acceptance and reverification tests for coordinate measuring machines (CMM)—Part 5:CMMs using single or multiple stylus contacting probing systems
    产品几何技术规范(GPS) 坐标测量机的验收检测和复检检测 第5部分:使用单探针或多探针接触式探测系统的坐标测量机
    China National Standards
    systems

    English PDF
    GB/T 34984-2017 Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—MAC and PHY specification for ultra high rate wireless personal area network
    信息技术 系统间远程通信和信息交换 局域网和城域网 超高速无线个域网的媒体访问控制和物理层规范
    China National Standards
    systems

    English PDF

    Find out:2234Items   |  To Page of: First -Previous-Next -Last  | [2] [3] [4] [5] [6] [7] [8]

     

    +86-755-25831330        [email protected] 
    106# Zhongmao Mansion,No.1 Beizhan Road,Shenzhen,China
    ©  RJS Copyright  2001-2025 All Rights Reserved

    - Since 2001 -
    Focus on China Standards & Compliance Services

    www.gbstandards.org

    China National Standards