2021 year China issued GB standards list


	GB/T 40921-2021 Expanded polypropylene (PP-E) beads 发泡聚丙烯（PP-E）珠粒
	GB/T 40735-2021 Method for inherent energy efficiency evaluation of computer numerical control machine tools 数控机床固有能量效率的评价方法
	GB/T 39794.2-2021 Test method for wind uplift resistance of mental roof—Part 2:Dynamic pressure method 金属屋面抗风掀性能检测方法第2部分：动态压力法
	GB/T 40724-2021 Terminology for carbon fiber and carbon fiber composites 碳纤维及其复合材料术语
	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
	GB/T 9966.11-2021 Test methods for natural stone—Part 11: Determination of resistance to ageing by cold and thermal shock 天然石材试验方法第11部分：激冷激热加速老化强度测定
	GB/T 40998-2021 Determination of hydroxypropyl content in modified starch -- Spectrophotometric method 变性淀粉中羟丙基含量的测定分光光度法
	GB/T 8897.1-2021 Primary batteries—Part 1:General 原电池第1部分：总则
	GB/T 20980-2021 General quality of biscuit 饼干质量通则
	GB/T 41102-2021 General technical requirements for injection moulding system for PET preform in packaging field 包装PET瓶坯注塑成型模具系统通用技术要求
	GB/T 39855-2021 Definition ,classification and nomenclature of nanotechnology products 纳米产品的定义、分类与命名
	GB/T 3903.9-2021 Footwear—Test methods for insoles—Heel pin holding strength 鞋类内底试验方法跟部持钉力
	GB/T 40766-2021 Digital space photogrammetry—Specifications for control survey 数字航天摄影测量控制测量规范
	GB/T 20933-2021 Hot rolled sheet pile 热轧钢板桩
	GB/T 39990-2021 Particulate -- Bioaerosol sampler -- Technical specification 颗粒生物气溶胶采样器技术条件
	GB/T 5169.20-2021 Fire hazard testing for electric and electronic products—Part 20: Surface spread of flame—Summary and relevance of test methods 电工电子产品着火危险试验第20部分：火焰表面蔓延试验方法概要和相关性
	GB/T 40032-2021 Safety requirements of battery swap for electric vehicles 电动汽车换电安全要求
	GB/T 40021-2021 General requirements of internet of things based on public telecommunication network 信息物理系统术语
	GB/T 40467-2021 Livestock and poultry meat quality testing—Guideline for near-infrared spectroscopy method 畜禽肉品质检测近红外法通则
	GB/T 40017-2021 Information technology—Telecommunications and information exchange between systems—Heterogeneous networks convergence and scalability of community energy-saving control network 信息技术系统间远程通信和信息交换社区节能控制异构网络融合与可扩展性

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