2021 year China issued GB standards list


	GB 1886.315-2021 National Food Safety Standards Food Additives Cochineal and its Aluminum Lake 食品安全国家标准食品添加剂胭脂虫红及其铝色淀
	GB 31651-2021 National Food Safety Standards Hygiene Specifications for Centralized Disinfection of Table (Drinking) Utensils 食品安全国家标准餐（饮）具集中消毒卫生规范
	GB 1903.54-2021 National Food Safety Standard Food Nutritional Enhancer Choline Bitartrate 食品安全国家标准食品营养强化剂酒石酸氢胆碱
	GB/T 6577-2021 Types,dimensions and tolerances of groove for seals with bearing rings for hydraulic cylinders piston 液压缸活塞用带支承环密封沟槽型式、尺寸和公差
	GB/T 19015-2021 Quality management—Guidelines for quality plans 质量管理质量计划指南
	GB/T 7731.5-2021 Ferrotungsten—Determination of silicon content—Silicomolybdenum blue spectrophotometric method 钨铁硅含量的测定硅钼蓝分光光度法
	GB 1886.340-2021 National Food Safety Standard Food Additive Tetrapotassium Pyrophosphate 食品安全国家标准食品添加剂焦磷酸四钾
	GB/T 9966.9-2021 Test methods for natural stone—Part 9: Determination of the dynamic modulus of elasticity by measuring the fundamental resonance frequency 天然石材试验方法第9部分：通过测量共振基本频率测定动力弹性模数
	GB/T 19011-2021 Guidelines for auditing management systems 管理体系审核指南
	GB 1886.339-2021 National Food Safety Standard Food Additive Sodium Pyrophosphate 食品安全国家标准食品添加剂焦磷酸钠
	GB/T 15765-2021 Hermetic motor-compressors for room air conditioners 房间空气调节器用全封闭型电动机-压缩机
	GB/T 13173-2021 Surface active agents - Test methods for detergents 表面活性剂洗涤剂试验方法
	GB/T 5211.14-2021 General methods of test for pigments and extenders—Part 14: Determination of residue on sieve—Mechanical flushing procedure 颜料和体质颜料通用试验方法第14部分：筛余物的测定机械冲洗法
	GB/T 28775-2021 Synchronous belt drives - Pulley with T trapezoidal profile system 同步带传动 T型梯形齿同步带轮
	GB/T 5687.13-2021 Ferrochromium—Determination of chromium, silicon, manganese, titanium, vanadium, iron contents—Wavelength dispersive X-ray fluorescence spectrometry (fused cast bead method) 铬铁铬、硅、锰、钛、钒和铁含量的测定波长色散X射线荧光光谱法(熔铸玻璃片法)
	GB/T 40485-2021 Method of determining automatically the random reflectance of vitrinite in coal—Image analysis method 煤的镜质体随机反射率自动测定图像分析法
	GB/T 8152.15-2021 Methods for chemical analysis of lead concentrates—Part 15:Determination of soluble lead content—Flame atomic absorption spectrometry 铅精矿化学分析方法第15部分：可溶性铅含量的测定火焰原子吸收光谱法
	GB/T 40515-2021 Ships and marine technology—Globe valves for use in low temperature applications—Design and testing requirements 船舶和海上技术船用超低温截止阀设计与试验要求
	GB/T 14290-2021 Round baler 圆草捆打捆机
	GB/T 15242.4-2021 Dimensions series of rod and piston dynamic seals for hydraulic cylinders-Part 4:Dimensions and tolerances of bearing rings groove 液压缸活塞和活塞杆动密封装置尺寸系列第4部分：支承环安装沟槽尺寸系列和公差

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