GB/T 20972.3-2025 Chinese PDF (GB /T20972.3-2025) GB/T 12643-2025 30-2025_Chinese: National food safety standard

30-2025_Chinese: National food safety standard - Food contact materials and products - Determination of phthalate esters and determination of migration (Chinese: 食品安全国家标准 食品接触材料及制品 邻苯二甲酸酯类化合物的测定和迁移量的测定)

GB/T 26718-2024_Chinese: Technical requirements for safety system of urban mass transit (Chinese: 城市轨道交通安全防范系统技术要求)

English versions: GB/T 23718

English versions: GB/T 20965-2025

English versions: GB 45438-2025

GB/T 20972.3-2025 Chinese PDF (GB /T20972.3-2025) GB/T 12643-2025 30-2025_Chinese: National food safety standardGB T 20972. 3 2025_Chinese: Petroleum and natural gas industries Materials for use in H2S containing environments in oil and gas production Part 3: Cracking resistant CRAs(corrosion resistant alloys) and other alloys (Chinese: 3) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20972. 3 2025