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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 36625.3-2021 |
Smart city-Data fusion-Part 3:Data acquisiTiOn specifications 智慧城市 数据融合 第3部分：数据采集规范 |
China National Standards TiO |
 English PDF |
| GB/T 34680.2-2021 |
EvaluaTiOn model and general evaluation indicator system for smart cities- Part 2:Information infrastructure 智慧城市评价模型及基础评价指标体系 第2部分：信息基础设施 |
China National Standards TiO |
English PDF |
| GB/T 33780.4-2021 |
Technical specificaTiOn of electronic government common platform based on cloud computing—Part 4:Operation system 基于云计算的电子政务公共平台技术规范 第4部分：操作系统 |
China National Standards TiO |
English PDF |
| GB/T 33351.2-2021 |
DeterminaTiOn of arsenic,beryllium,antimony in electrical and electronic products—Part 2:Inductively coupled plasma optical emission spectrometry 电子电气产品中砷、铍、锑的测定 第2部分：电感耦合等离子体发射光谱法 |
China National Standards TiO |
English PDF |
| GB/T 32910.4-2021 |
Data center—Resource utilizaTiOn—Part 4: Renewable energy factor 数据中心 资源利用 第4部分：可再生能源利用率 |
China National Standards TiO |
English PDF |
| GB/T 31016-2021 |
General technical specificaTiOn for mobile laboratory of sample collection and treatment 样品采集与处理移动实验室通用技术规范 |
China National Standards TiO |
English PDF |
| GB/T 29186.6-2021 |
EvaluaTiOn of brand value elements-Part 6:Intangible elements 品牌价值要素评价 第6部分：无形要素 |
China National Standards TiO |
English PDF |
| GB/T 29186.5-2021 |
EvaluaTiOn of brand value elements-Part 5:Service elements 品牌价值要素评价 第5部分：服务要素 |
China National Standards TiO |
English PDF |
| GB/T 29186.4-2021 |
EvaluaTiOn of brand value elements-Part 4:Innovation elements 品牌价值要素评价 第4部分：创新要素 |
China National Standards TiO |
English PDF |
| GB/T 29186.3-2021 |
EvaluaTiOn of brand value elements-Part 3:Quality elements 品牌价值要素评价 第3部分：质量要素 |
China National Standards TiO |
English PDF |
| GB/T 29186.2-2021 |
EvaluaTiOn of brand value elements-Part 2:Tangible elements 品牌价值要素评价 第2部分：有形要素 |
China National Standards TiO |
English PDF |
| GB/T 29186.1-2021 |
EvaluaTiOn of brand value elements-Part 1:General principles 品牌价值要素评价 第1部分：通则 |
China National Standards TiO |
English PDF |
| GB/T 27021.9-2021 |
Conformity assessment-Requirements for bodies providing audit and certificaTiOn of management systems-Part 9:Competence requirements for auditing and certification of anti-bribery management systems 合格评定 管理体系审核认证机构要求 第9部分：反贿赂管理体系审核与认证能力要求 |
China National Standards TiO |
English PDF |
| GB/T 27021.10-2021 |
Conformity assessment—Requirements for bodies providing audit and certificaTiOn of management systems—Part 10：Competence requirements for auditing and certification of occupational health and safety management systems 合格评定 管理体系审核认证机构要求 第10部分：职业健康安全管理体系审核与认证能力要求 |
China National Standards TiO |
English PDF |
| GB/T 25217.8-2021 |
Methods for test，monitoring and prevenTiOn of rock burst-Part 8:Monitoring method of electromagnetic radiation 冲击地压测定、监测与防治方法 第8部分：电磁辐射监测方法 |
China National Standards TiO |
English PDF |
| GB/T 25000.30-2021 |
Systems and software engineering—Systems and software quality requirements and evaluaTiOn(SQuaRE)—Part 30:Quality requirements framework 系统与软件工程 系统与软件质量要求和评价(SQuaRE) 第30部分：质量需求框架 |
China National Standards TiO |
English PDF |
| GB/T 25000.20-2021 |
Systems and software engineering -- Systems and software quality requirements and evaluaTiOn (SQuaRE) -- Part 20: Quality measurement framework 系统与软件工程 系统与软件质量要求和评价（SQuaRE） 第 20 部分：质量测量框架 |
China National Standards TiO |
English PDF |
| GB/T 25000.1-2021 |
Systems and software engineering-Systems and software quality requirements and evaluaTiOn (SQuaRE)-Part 1:Guide to SQuaRE 系统与软件工程 系统与软件质量要求和评价（SQuaRE） 第1部分：SQuaRE指南 |
China National Standards TiO |
English PDF |
| GB/T 23286.3-2021 |
Document management-Electronic document file format for long-term preservaTiOn-Part 3:Use of ISO 32000-1 with support for embedded files (PDF/A-3) 文献管理 长期保存的电子文档文件格式 第3部分：支持嵌入式文件的ISO 32000-1 的使用（PDF/A-3） |
China National Standards TiO |
English PDF |
| GB/T 19924-2021 |
Mobile cranes-DeterminaTiOn of stability 流动式起重机 稳定性的确定 |
China National Standards TiO |
English PDF |
| GB/T 16895.32-2021 |
Low voltage electrical installaTiOns - Part 7-712: Requirements for special installations or locations - Solar photovoltaic (PV) power supply systems 低压电气装置 第7-712部分：特殊装置或场所的要求 太阳能光伏（PV）电源系统 |
China National Standards TiO |
English PDF |
| GB/T 15972.54-2021 |
SpecificaTiOns for optical fibre test methods—Part 54:Measurement methods and test procedures for environmental characteristics—Gamma irradiation 光纤试验方法规范 第54部分：环境性能的测量方法和试验程序 伽玛辐照 |
China National Standards TiO |
English PDF |
| GB/T 15972.45-2021 |
SpecificaTiOns for optical fibre test methods—Part 45:Measurement methods and test procedures for transmission characteristics—Mode field diameter 光纤试验方法规范 第45部分：传输特性的测量方法和试验程序 模场直径 |
China National Standards TiO |
English PDF |
| GB/T 15972.43-2021 |
SpecificaTiOns for optical fibre test methods—Part 43: Measurement methods and test procedures for transmission characteristics—Numerical aperture 光纤试验方法规范 第43部分：传输特性的测量方法和试验程序 数值孔径 |
China National Standards TiO |
English PDF |
| GB/T 15972.41-2021 |
SpecificaTiOns for optical fibre test methods-Part 41:Measurement methods and test procedures for transmission characteristics-Bandwidth 光纤试验方法规范 第41部分：传输特性的测量方法和试验程序 带宽 |
China National Standards TiO |
English PDF |
| GB/T 15972.34-2021 |
SpecificaTiOns for optical fibre test methods—Part 34:Measurement methods and test procedures for mechanical characteristics—Fibre curl 光纤试验方法规范 第34部分：机械性能的测量方法和试验程序 光纤翘曲 |
China National Standards TiO |
English PDF |
| GB/T 15972.30-2021 |
SpecificaTiOns for optical fibre test methods—Part 30: Measurement methods and test procedures for mechanical characteristics—Fibre proof test 光纤试验方法规范 第30部分：机械性能的测量方法和试验程序 光纤筛选试验 |
China National Standards TiO |
English PDF |
| GB/T 15972.20-2021 |
SpecificaTiOns for optical fibre test methods-Part 20:Measurement methods and test procedures for dimensions- Fibre geometry 光纤试验方法规范 第20部分：尺寸参数的测量方法和试验程序 光纤几何参数 |
China National Standards TiO |
English PDF |
| GB/T 15972.10-2021 |
SpecificaTiOns for optical fibre test methods-Part 10:Measurement methods and test procedures-General and guidance 光纤试验方法规范 第10部分：测量方法和试验程序 总则 |
China National Standards TiO |
English PDF |
| GB/T 13449-2021 |
Method for sampling and sample preparaTiOn of gold lump ores 金块矿取样和制样方法 |
China National Standards TiO |
English PDF |
| GB/T 13297-2021 |
General rules of packaging，marking and quality certificaTiOn for precision alloys 精密合金包装、标志和质量证明书的一般规定 |
China National Standards TiO |
English PDF |
| GB/T 12786-2021 |
General technical condiTiOns for automatic internal combustion engine power stations 自动化内燃机电站通用技术条件 |
China National Standards TiO |
English PDF |
| GB/T 11066.11-2021 |
Methods for chemical analysis of gold-Part 11:DeterminaTiOn of magnesium，chromium，manganese，iron，nickel copper，palladium，silver，tin，antimony，lead and bismuth contents-Inductively coupled plasma mass spectrometry 金化学分析方法 第11部分：镁、铬、锰、铁、镍、铜、钯、银、锡、锑、铅和铋含量的测定 电感耦合等离子体质谱法 |
China National Standards TiO |
English PDF |
| GB/T 9966.18-2021 |
Test methods for natural stone-Part 18:Petrographic examinaTiOn 天然石材试验方法 第18部分：岩相分析 |
China National Standards TiO |
English PDF |
| GB/T 9966.17-2021 |
Test methods for natural stone-Part 17:DeterminaTiOn of resistance to salt crystallization 天然石材试验方法 第17部分：盐结晶强度的测定 |
China National Standards TiO |
English PDF |
| GB/T 9966.16-2021 |
Test methods for natural stone- Part 16:DeterminaTiOn of linear thermal expansion coefficient 天然石材试验方法 第16部分：线性热膨胀系数的测定 |
China National Standards TiO |
English PDF |
| GB/T 9966.15-2021 |
Test methods for natural stone- Part 15:DeterminaTiOn of resistance ageing by salt mist 天然石材试验方法 第15部分：耐盐雾老化强度测定 |
China National Standards TiO |
English PDF |
| GB/T 9966.14-2021 |
Test methods for natural stone-Part 14:DeterminaTiOn of rupture energy 天然石材试验方法 第14部分：耐断裂能量的测定 |
China National Standards TiO |
English PDF |
| GB/T 9966.12-2021 |
Test methods for natural stone-Part 12:DeterminaTiOn of static elastic modulus 天然石材试验方法 第12部分：静态弹性模数的测定 |
China National Standards TiO |
English PDF |
| GB/T 9966.10-2021 |
Test methods for natural stone-Part 10:DeterminaTiOn of resistance to shaking for individual stone anchoragest 天然石材试验方法 第10部分：挂件组合单元抗震性能的测定 |
China National Standards TiO |
English PDF |
| GB/T 8151.24-2021 |
Methods for chemical analysis of zinc concentrates—Part 24:DeterminaTiOn of soluble zinc content—Flame atomic absorption spectrometry 锌精矿化学分析方法 第24部分:可溶性锌含量的测定 火焰原子吸收光谱法 |
China National Standards TiO |
English PDF |
| GB/T 7424.22-2021 |
Optical fibre cable generic specificaTiOn—Part 22：Basic optical cable test procedures—Environmental test methods 光缆总规范 第22部分：光缆基本试验方法 环境性能试验方法 |
China National Standards TiO |
English PDF |
| GB/T 7424.20-2021 |
Optical fibre cable generic specificaTiOn—Part 20:Basic optical cable test procedures—General and definitions 光缆总规范 第20部分：光缆基本试验方法 总则和定义 |
China National Standards TiO |
English PDF |
| GB/T 6809.12-2021 |
Reciprocating internal combusTiOn engines—Vocabulary of components and systems—Part 12:Exhaust emission control systems 往复式内燃机 零部件和系统术语 第12部分：排放控制系统 |
China National Standards TiO |
English PDF |
| GB/T 3480.3-2021 |
CalculaTiOn of load capacity of spur and helical gears—Part 3: Calculation of tooth bending strength 直齿轮和斜齿轮承载能力计算 第3部分：轮齿弯曲强度计算 |
China National Standards TiO |
English PDF |
| GB/T 2900.36-2021 |
Electrotechnical terminology—Electric tracTiOn 电工术语 电力牵引 |
China National Standards TiO |
English PDF |
| GB/T 17651.2-2021 |
Measurement of smoke density of cables or optical fiber cables burning under defined condiTiOns - Part 2: Test procedure and requirements 电缆或光缆在特定条件下燃烧的烟密度测定 第2部分：试验程序和要求 |
China National Standards TiO |
English PDF |
| GB/T 17651.1-2021 |
Measurement of smoke density of cables or optical fiber cables burning under defined condiTiOns-Part 1:Test apparatus 电缆或光缆在特定条件下燃烧的烟密度测定 第1部分：试验装置 |
China National Standards TiO |
English PDF |
| GB/T 17650.2-2021 |
Test on gases evolved during combusTiOn of materials from cables or optical fiber cables - Part 2: Determination of acidity (by pH measurement) and conductivity 取自电缆或光缆的材料燃烧时释出气体的试验方法 第2部分：酸度（用pH测量）和电导率的测定 |
China National Standards TiO |
English PDF |
| GB/T 17650.1-2021 |
Test on gases evolved during combusTiOn of materials from cables or optical fiber cables-Part 1:Determination of the halogen acid gas content 取自电缆或光缆的材料燃烧时释出气体的试验方法 第1部分：卤酸气体总量的测定 |
China National Standards TiO |
English PDF |
| GB/T 17215.211-2021 |
Electricity metering equipment(AC)—General requirements, tests and test condiTiOns—Part 11：Metering equipment 电测量设备（交流） 通用要求、试验和试验条件 第11部分：测量设备 |
China National Standards TiO |
English PDF |
| GB/T 28022-2021 |
Age determinaTiOn guidelines for toys 玩具适用年龄判定指南 |
China National Standards TiO |
English PDF |
| GB/T 39948-2021 |
Method of heat distribuTiOn test for food thermal sterilization equipments 食品热力杀菌设备热分布测试规程 |
China National Standards TiO |
English PDF |
| GB/T 39945-2021 |
Method of heat penetraTiOn test for canned food 罐藏食品热穿透测试规程 |
China National Standards TiO |
English PDF |
| GB/T 39849-2021 |
Non-destructive testing instruments—Ultrasonic time-of-flight diffracTiOn instrument—Methods of performance tests 无损检测仪器 超声衍射声时检测仪 性能测试方法 |
China National Standards TiO |
English PDF |
| GB/T 19702-2021 |
In vitro diagnostic medical devices -- Measurement of quantities in samples of biological origin -- Requirements for content and presentaTiOn of reference measurement procedures 体外诊断医疗器械 生物源性样品中量的测量 参考测量程序的表述和内容的要求 |
China National Standards TiO |
English PDF |
| GB/T 39809-2021 |
Measuring method of the energy consumpTiOn of flat glass furnace 平板玻璃窑炉能耗测定方法 |
China National Standards TiO |
English PDF |
| GB/T 39806-2021 |
Safety performance evaluaTiOn of suspended floor,stairs, trail and plank road glass 悬空地板、踏步、步道及栈道玻璃安全性能评价 |
China National Standards TiO |
English PDF |
| GB/T 39757-2021 |
Building construcTiOn machinery and equipment-Code of practice for the safe use of concrete pumps and mobile concrete pumps with placing boom 建筑施工机械与设备 混凝土泵和泵车安全使用规程 |
China National Standards TiO |
English PDF |
| GB/T 39749-2021 |
EvaluaTiOn method and graduation for energy efficiency performance of insulating glass unit 中空玻璃隔热保温性能评价方法及分级 |
China National Standards TiO |
English PDF |
| GB/T 39824-2021 |
DeterminaTiOn of relative strength of dyes in solution 溶液中染料相对强度的测定 |
China National Standards TiO |
English PDF |
| GB/T 39944-2021 |
Digital cone yarn dyeing complete equipment—General technical specificaTiOn 筒子纱数字化染色成套装备 通用技术条件 |
China National Standards TiO |
English PDF |
| GB/T 39933-2021 |
RotaTiOnal moulding—Test method for low temperature impact 滚塑成型 低温冲击试验 |
China National Standards TiO |
English PDF |
| GB/T 39922-2021 |
Inoculated log producTiOn regulations for the cultivation of white jelly fungus 段木银耳耳棒生产规范 |
China National Standards TiO |
English PDF |
| GB/T 39751-2021 |
Energy detecTiOn method for equipment manufacturing system—Guideline 装备制造系统能耗检测方法 导则 |
China National Standards TiO |
English PDF |
| GB/T 15218-2021 |
ClassificaTiOn for reserves of groundwater resources 地下水资源储量分类分级 |
China National Standards TiO |
English PDF |
| GB/T 39890-2021 |
Shoulder abducTiOn orthoses with upright 支条式肩外展矫形器 |
China National Standards TiO |
English PDF |
| GB/T 39762-2021 |
Textile machinery—Opener and cleaner for staple fibres preparaTiOn—Vocabulary and principles of construction 纺织机械 短纤维开松机和清棉机 术语和结构原理 |
China National Standards TiO |
English PDF |
| GB/T 39758-2021 |
Accessible design—ApplicaTiOn of braille on signage, equipment and appliances 无障碍设计 盲文在标志、设备和器具上的应用 |
China National Standards TiO |
English PDF |
| GB/T 39756-2021 |
General specificaTiOn for the scanning voice reading machine 扫描式语音读书机通用技术条件 |
China National Standards TiO |
English PDF |
| GB/T 39748.9-2021 |
Urine-absorbing aids for incontinence—Test methods for characterizing polymer-based absorbent materials—Part 9:Gravimetric determinaTiOn of density 失禁用尿吸收辅助器具 聚合物基质吸液材料特性的测试方法 第9部分：称重法测定密度 |
China National Standards TiO |
English PDF |
| GB/T 39748.8-2021 |
Urine-absorbing aids for incontinence—Test methods for characterizing polymer-based absorbent materials—Part 8:Gravimetric determinaTiOn of flowrate 失禁用尿吸收辅助器具 聚合物基质吸液材料特性的测试方法 第8部分：称重法测定流量 |
China National Standards TiO |
English PDF |
| GB/T 39748.7-2021 |
Urine-absorbing aids for incontinence—Test methods for characterizing polymer-based absorbent materials—Part 7:Gravimetric determinaTiOn of absorption under pressure 失禁用尿吸收辅助器具 聚合物基质吸液材料特性的测试方法 第7部分：称重法测定压力作用下的吸液量 |
China National Standards TiO |
English PDF |
| GB/T 39748.6-2021 |
Urine-absorbing aids for incontinence—Test methods for characterizing polymer-based absorbent materials—Part 6:Gravimetric determinaTiOn of fluid retention capacity in saline solution after centrifugation 失禁用尿吸收辅助器具 聚合物基质吸液材料特性的测试方法 第 6 部分: 称重法测定离心后的生理盐水保液率 |
China National Standards TiO |
English PDF |
| GB/T 39748.11-2021 |
Urine-absorbing aids for incontinence—Test methods for characterizing polymer-based absorbent materials—Part 11:DeterminaTiOn of content of respirable particles 失禁用尿吸收辅助器具 聚合物基质吸液材料特性的测试方法 第11部分：可吸入颗粒含量的测定 |
China National Standards TiO |
English PDF |
| GB/T 39748.10-2021 |
Urine-absorbing aids for incontinence -- Test methods for characterizing polymer-based absorbent materials -- Part 10: DeterminaTiOn of extractable polymer content by potentiometric titration 失禁用尿吸收辅助器具 聚合物基质吸液材料特性的测定方法 第10部分：电位滴定法测定可萃取聚合物量 |
China National Standards TiO |
English PDF |
| GB/T 4214.8-2021 |
Test method for noise of household and similar electrical appliances—Particular requirements for electric cooking ranges, ovens, grills, microwave ovens and any combinaTiOn of these 家用和类似用途电器噪声测试方法 电灶、烤箱、烤架、微波炉及其组合器具的特殊要求 |
China National Standards TiO |
English PDF |
| GB/T 39963-2021 |
Technical specificaTiOn on C80~C100 concrete shaft lining applied in vertical freezing shaft 立井冻结法凿井井壁应用C80～C100混凝土技术规程 |
China National Standards TiO |
English PDF |
| GB/T 3488.3-2021 |
Hardmetals—Metallographic determinaTiOn of microstructure—Part 3: Measurement of microstructural features in Ti (C, N) and WC/cubic carbide based hardmetals 硬质合金 显微组织的金相测定 第3部分：Ti（C,N）和WC立方碳化物基硬质合金显微组织的金相测定 |
China National Standards TiO |
English PDF |
| GB/T 39972-2021 |
Technical specificaTiOn of‘Inteplan’information system for implementation and supervision of spatial planning 国土空间规划“一张图”实施监督信息系统技术规范 |
China National Standards TiO |
English PDF |
| GB/T 39966-2021 |
Guidelines for environmental performance evaluaTiOn in waste resource multiple utilization enterprises 废弃资源综合利用业环境绩效评价导则 |
China National Standards TiO |
English PDF |
| GB/T 39964-2021 |
ImplementaTiOn guidance for energy management systemsin paper industry 造纸行业能源管理体系实施指南 |
China National Standards TiO |
English PDF |
| GB/T 39960-2021 |
Straight-sided single-acTiOn mechanical power presses -- Characteristicsand dimensions 闭式单动机械压力机 参数和尺寸 |
China National Standards TiO |
English PDF |
| GB/T 39954-2021 |
Tool storage with automatic tool changer—SpecificaTiOn of performance test 刀库和自动交换装置 性能试验方法 |
China National Standards TiO |
English PDF |
| GB/T 39951-2021 |
EvaluaTiOn method for degradability of disposable paper products 一次性纸制品降解性能评价方法 |
China National Standards TiO |
English PDF |
| GB/T 39947-2021 |
SelecTiOn and design for food packaging 食品包装选择及设计 |
China National Standards TiO |
English PDF |
| GB/T 39946-2021 |
DeterminaTiOn of prohibited Para Red in lip cosmetics -- High performance liquid chromatography 唇用化妆品中禁用物质对位红的测定 高效液相色谱法 |
China National Standards TiO |
English PDF |
| GB/T 39943-2021 |
SelecTiOn and design for food packaging LED灯串性能要求 |
China National Standards TiO |
English PDF |
| GB/T 39941-2021 |
Monitor and evaluaTiOn methods for quality safety in wooden furniture production process 木家具生产过程质量安全状态监测与评价方法 |
China National Standards TiO |
English PDF |
| GB/T 39939-2021 |
Volatile organic compounds in furniture components—Test method for the rapid determinaTiOn in the field 家具部件中挥发性有机化合物 现场快速检测方法 |
China National Standards TiO |
English PDF |
| GB/T 39938-2021 |
Electric room heating—Underfloor heating—Performance characteristics—DefiniTiOns, method of testing, sizing and formula symbols 室内电取暖 地暖 性能特征 定义、测试方法、尺寸和公式符号 |
China National Standards TiO |
English PDF |
| GB/T 39935-2021 |
Plastics—Film and sheeting—DeterminaTiOn of blocking resistance 塑料制品 薄膜和片材 抗粘连性的测定 |
China National Standards TiO |
English PDF |
| GB/T 39934-2021 |
Plastics—Film and sheeting—DeterminaTiOn of blocking resistance 家具中挥发性有机化合物的筛查检测方法 气相色谱-质谱法 |
China National Standards TiO |
English PDF |
| GB/T 39931-2021 |
Volatile organic compounds from wooden furniture—On-site and rapid detecTiOn method 木家具中挥发性有机化合物 现场快速检测方法 |
China National Standards TiO |
English PDF |
| GB/T 39927-2021 |
DeterminaTiOn of prohibited substances veratrine in cosmetics—High performance liquid chromatography 化妆品中禁用物质藜芦碱的测定 高效液相色谱法 |
China National Standards TiO |
English PDF |
| GB/T 39926-2021 |
Hydraulic fluid power—Filter element test methods—Thermal condiTiOning and cold start-up simulation 液压传动 滤芯试验方法 热工况和冷启动模拟 |
China National Standards TiO |
English PDF |
| GB/T 39925-2021 |
StaTiOnary equipment for agriculture—Data communications network for livestock farming 农业固定设备 畜牧业数据通信网络 |
China National Standards TiO |
English PDF |
| GB/T 39924-2021 |
Technical requirements of water saving evaluaTiOn for rotating sprinklers 旋转式喷头节水评价技术要求 |
China National Standards TiO |
English PDF |
| GB/T 39912-2021 |
Science and technology program-generated scientific data archiving—Technical and management specificaTiOn 科技计划形成的科学数据汇交 技术与管理规范 |
China National Standards TiO |
English PDF |
| GB/T 39911-2021 |
Brand valuaTiOn—Telecommunications industry 品牌价值评价 电信业 |
China National Standards TiO |
English PDF |
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