GB 31604.61-2025 Chinese PDF GB 23394-2024 3-cyclobutanediol (Chinese: 食品安全国家标准 食品接触材料及制品 2

3-cyclobutanediol (Chinese: 食品安全国家标准 食品接触材料及制品 2

40-2024_Chinese: Specifications for optical fibre test methods - Part 40: Measurement methods and test procedures for transmission characteristics - Attenuation (Chinese: 光纤试验方法规范 第40部分：传输特性的测量方法和试验程序 衰减)

GB/T 13284-2025_Chinese: Design criteria of safety systems in nuclear power plants (Chinese: 核电厂安全系统设计准则)

GB/T 15972

75-2025_Chinese: National food safety standard - Nutrition fortifier - 6S-5-methyltetrahydrofolate

GB 31604.61-2025 Chinese PDF GB 23394-2024 3-cyclobutanediol (Chinese: 食品安全国家标准 食品接触材料及制品 2GB 31604. 61 2025_Chinese: National food safety standard Food contact materials and products Determination of migration of 2,2,4,4 tetramethyl 1,3 cyclobutanediol (Chinese: 2,2,4,4 1,3 ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 31604. 61 2025