2021 year China issued GB standards list


	GB/T 5271.37-2021 Information technology—Vocabulary—Part 37:Biometrics 信息技术词汇第37部分：生物特征识别
	GB/T 39818-2021 Plastics—Thermosetting moulding materials—Determination of shrinkage 塑料热固性模塑材料收缩率的测定
	GB/T 40852.1-2021 High frequency inductive components—Non-electrical characteristics and measuring methods—Part 1:Fixed,surface mounted inductors for use in electronic and telecommunication equipment 高频感性元件非电特性及其测量方法第1部分：电子和通信设备用表面安装固定电感器
	GB/T 39821-2021 Plastics—Determination of apparent density of moulding material that cannot be poured from a specified funnel 塑料不能从规定漏斗流出的模塑材料表观密度的测定
	GB/T 8361-2021 Ultrasonic testing method for the surface of cold drawn round steel 冷拉圆钢表面超声检测方法
	GB/T 40581-2021 Calculation specification for power system security and stability 电力系统安全稳定计算规范
	GB/T 39789-2021 Non-destructive testing of welds—Eddy current-video integrated testing method of metal composites weld 焊缝无损检测金属复合材料焊缝涡流视频集成检测方法
	GB/T 22712-2021 Technical specification for G series cooling fans applying to variable frequency motors 变频电机用G系列冷却风机技术规范
	GB/T 15039-2021 Standard lamps of luminous intensity and total luminous flux 发光强度、总光通量标准灯泡
	GB/T 40853.1-2021 High frequency inductive components—Electrical characteristics and measuring method—Part 1:Nanohenry range chip inductor 高频感性元件电特性及其测量方法第1部分：纳亨级片式电感器
	GB/T 40675.2-2021 Noise suppression sheet for digital devices and equipment—Part 2:Measuring methods 数字器件和设备用噪声抑制片第2部分：测量方法
	GB/T 39838-2021 LTE-based broadband trunking communication (B-TrunC) system—Test methods for interface (Phase 1)—Interface between UE and trunking core network 基于LTE技术的宽带集群通信（B-TrunC）系统接口测试方法（第一阶段）终端到集群核心网接口
	GB/T 39815-2021 Test method for scratch resistance of ultrathin glass 超薄玻璃抗划伤性能试验方法
	GB/T 40006.9-2021 Plastics—Recycled plastics—Part 9:Poly(ethylene terephthalate) (PET) materials 塑料再生塑料第9部分：聚对苯二甲酸乙二醇酯(PET)材料
	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 20871.63-2021 Organic light emitting diode (OLED) displays—Part 6-3:Measuring methods of image quality 有机发光二极管显示器件第6-3部分：图像质量测试方法
	GB/T 39865-2021 Method for measuring refractive index of uniaxial optical crystals 单轴晶光学晶体折射率测量方法
	GB/T 40801-2021 Welding procedure qualification tests for titanium,zirconium and their alloys 钛、锆及其合金的焊接工艺评定试验
	GB/T 40887.1-2021 Wheelchair containment and occupant retention systems for accessible transport vehicles designed for use by both sitting and standing passengers—Part 1:Systems for rearward-facing wheelchair seated passengers 无障碍客车的轮椅车及乘坐者限位系统第1部分：后向式轮椅车乘坐者系统
	GB/T 39936-2021 Plastics—Extruded sheets of polypropylene (PP)—Requirements and test methods 深冷保冷用泡沫塑料

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