2021 year China issued GB standards list


	GB/T 51434-2021 Technical standard for internet security facilities engineering 互联网网络安全设施工程技术标准
	GB/T 40709-2021 Technical requirements for swell compensator of trailing suction hopper dredger 耙吸挖泥船波浪补偿器技术要求
	GB/T 40480-2021 Management requirement for logistics traceable information 物流追溯信息管理要求
	GB/T 24847-2021 Technical guide on 1000kV AC system voltage and reactive power 1000kV交流系统电压和无功电力技术导则
	GB/T 40135-2021 Detection and identification of Xylophilus ampelinus (Panagopoulos) Willems et al. 葡萄细菌性疫病菌检疫鉴定方法
	GB/T 15972.49-2021 Specifications for optical fibre test methods—Part 49: Measurement methods and test procedures for transmission characteristics—Differential mode delay 光纤试验方法规范第49部分：传输特性的测量方法和试验程序微分模时延
	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
	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
	GB/T 39902-2021 Technical specification for the levitation control system of medium-low speed maglev vehicle of the urban rail transit 城市轨道交通中低速磁浮车辆悬浮控制系统技术条件
	GB/T 41042-2021 Guidance for utilization and classification of content of valuable elements in coal 煤中有价元素含量分级及应用导则
	GB/T 25684.10-2021 Earth-moving machinery—Safety—Part 10: Requirements for trenchers 土方机械安全第10部分：挖沟机的要求
	GB/T 15224.2-2021 Classification for quality of coal—Part 2: Sulfur content 煤炭质量分级第2部分：硫分
	GB/T 24166-2021 Determination of the content of chlorinated phenols in dye products 染料产品中含氯苯酚的测定
	GB 1886.321-2021 National Food Safety Standard Food Additive Thaumatin 食品安全国家标准食品添加剂索马甜
	GB 55019-2021 General Code for Accessibility in Building and Municipal Engineering 建筑与市政工程无障碍通用规范
	GB/T 40110-2021 Surface chemical analysis - Determination of surface elemental contamination on silicon wafers by total-reflection X-ray fluorescence (TXRF) spectroscopy 表面化学分析全反射X射线荧光光谱法（TXRF）测定硅片表面元素污染
	GB/T 19016-2021 Quality management—Guidelines for quality management in projects 质量管理项目质量管理指南
	GB/T 18898.1-2021 Erbium doped fiber amplifier -- Part 1: C band erbium doped fiber amplifier 掺铒光纤放大器?? 第1部分：C波段掺铒光纤放大器
	GB/T 40109-2021 Surface chemical analysis - Secondary-ion mass spectrometry - Method for depth profiling of boron in silicon 表面化学分析二次离子质谱硅中硼深度剖析方法
	GB/T 40089-2021 Steel wire ropes for the petroleum and natural gas industries—Minimum requirements and terms of acceptance 石油和天然气工业用钢丝绳最低要求和验收条件

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