2020 year China issued GB standards list


	GB/T 30269.809-2020 Information technology—Sensor networks—Part 809：Testing：Conformance testing for the network layer of wireless sensor networks based on IP protocol 信息技术传感器网络第809部分：测试：基于IP的无线传感器网络网络层协议一致性测试
	GB/T 38898-2020 Non-destructive testing—Testing method for measuring coating bond strength using ultrasonic wave 无损检测涂层结合强度超声检测方法
	GB 4544-2020 Beer bottles 啤酒瓶
	GB/T 39038-2020 Ship and marine technology—Technical requirements for liquefied natural gas bunkering dry-disconnect/connect coupling 船舶与海上技术液化天然气加注干式快速接头技术要求
	GB/T 38868-2020 Industrial control network general technical requirements—Wired networks 工业控制网络通用技术要求有线网络
	GB/T 18569.2-2020 Safety of machinery—Reduction of risks to health resulting from hazardous substances emitted by machinery—Part 2: Methodology leading to verification procedures 机械安全减小由机械排放的有害物质对健康的风险第2部分：生成验证流程的方法
	GB/T 38924.6-2020 Environmental test methods for civil small and light unmanned aircraft system—Part 6: Vibration test 民用轻小型无人机系统环境试验方法第6部分：振动试验
	GB/T 38860-2020 Online training for leadership—Technical requirements for learner portfolio 干部网络培训学员学习档案技术要求
	GB/T 25127.2-2020 Low ambient temperature air source heat pump （water chilling）packages—Part 2：Heat pump （water chilling）packages for household and similar application 低环境温度空气源热泵（冷水）机组第2部分：户用及类似用途的热泵（冷水）机组
	GB 9706.206-2020 Medical electrical equipment—Part 2-6: Particular requirments for the basic safety and essential performence of microwave therapy equipment 医用电气设备　第2-6部分：微波治疗设备的基本安全和基本性能专用要求
	GB/T 20975.24-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 24：Determination of total rare earth content 铝及铝合金化学分析方法第24部分：稀土总含量的测定
	GB/T 39083-2020 Specification of express service payment information exchange 快递服务支付信息交换规范
	GB/T 38812.1-2020 Direct reduced iron—Determination of iron(Ⅱ) content—The potassium dichromate titrimetric method after decomposition of sample by ferric chloride 直接还原铁亚铁含量的测定三氯化铁分解重铬酸钾滴定法
	GB/T 39030-2020 Technical specification of physiological activity evaluation for enzyme preparations 酶制剂生理活性评价技术规范
	GB/T 39037.2-2020 Lashing and securing arrangements on road vehicles for sea transportation on Ro/Ro ships—General requirements—Part 2: Semi-trailers 用于海上滚装船运输的道路车辆的系固点与系固设施布置通用要求第2部分：半挂车
	GB/T 39542.3-2020 Mechanical pencils for technical drawings—Part 3: Black leads—Bending strengths of HB leads 技术制图活动铅笔第3部分：黑铅芯 HB铅芯弯曲强度
	GB/T 38952-2020 Non-destructive testing—Testing method for measuring residual stress using bulk wave 无损检测残余应力超声体波检测方法
	GB/T 9771.3-2020 Single-mode optical fibres for telecommunication—Part 3: Characteristics of an extended wavelength band dispersion unshifted single-mode optical fibre 通信用单模光纤第3部分：波长段扩展的非色散位移单模光纤特性
	GB/T 20975.12-2020 Methods for chemical analysis of aluminium and aluminium alloys—Part 12: Determination of titanium content 铝及铝合金化学分析方法第12部分：钛含量的测定
	GB/T 24328.8-2020 Tissue paper and tissue products—Part 8: Determination of optical properties—Measurement of brightness and colour—D65/10°（outdoor daylight conditions) 卫生纸及其制品第8部分：光学性能的测定亮度和颜色的测定 D65/10°（室外日光条件）

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