2021 year China issued GB standards list


	GB/T 39872-2021 Data specification for disclosure of technical indicators in standard literature 标准文献技术指标揭示数据规范
	GB/T 26519.2-2021 Persulfate for industrial use—Part 2:Potassium persulfate for industrial use 工业过硫酸盐第2部分：工业过硫酸钾
	GB/T 39949.3-2021 Hydraulic fluid power—Mounting dimensions for accessories of single rod cylinder—Part 3: 16 MPa compact series with bores from 250mm to 500mm 液压传动单杆缸附件的安装尺寸第3部分：16 MPa缸径250 mm～500 mm紧凑型系列
	GB/T 40553-2021 Plastics—Specifications for plastics suitable for home composting 塑料适合家庭堆肥塑料技术规范
	GB/T 10395.20-2021 Agricultural and forestry machinery—Safety—Part 20:Pick-up balers 农林机械安全第20部分：捡拾打捆机
	GB 1886.324-2021 National Food Safety Standard Food Additive Metatartaric Acid 食品安全国家标准食品添加剂偏酒石酸
	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
	GB/T 18257-2021 Hot-face identification marking of refractory bricks for use in rotary kilns 回转窑用耐火砖热面标记
	GB/T 40716-2021 Test method for air retention of motor vehicle tyres 汽车轮胎气密性试验方法
	GB/T 39869-2021 Brand evaluation -- Tourist destination 品牌评价旅游目的地
	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
	GB/T 22576.7-2021 Medical laboratories—Requirements for quality and competence—Part 7：Requirements in the field of transfusion medicine 医学实验室质量和能力的要求第7部分：输血医学领域的要求
	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
	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
	GB/T 22271.1-2021 Plastics -- Polyoxymethylene(POM) moulding and extrusion materials -- Part 1: Designation system and basis for specification 塑料聚甲醛（POM）模塑和挤出材料第1部分：命名系统和分类基础
	GB/T 14949.6-2021 Manganese ores—Determination of copper,lead and zinc content—Flame atomic absorption spectrometric method 锰矿石铜、铅和锌含量的测定火焰原子吸收光谱法
	GB/T 40565.3-2021 Connections for hydraulic fluid power—Quick-action couplings—Part 3:Screw connection type for general purpose 液压传动连接快换接头第3部分：螺纹连接通用型
	GB/T 40640.5-2021 Informationalized management of chemicals—Part 5: Chemicals data center 化学品管理信息化第5部分：化学品数据中心
	GB/T 40170-2021 Principle of plasmid extraction and testing 质粒抽提及检测通则
	GB/T 24619-2021 Synchronous belt drives - Curvilinear profile systems　G, H, R and S belts and pulleys 同步带传动 G、H、R、S齿型曲线齿同步带与带轮

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