GB/T 7143-2025 Chinese PDF (GB /T7143-2025) GB/T 44990-2024 English versions: GBZ42749

English versions: GBZ42749

61-2025_Chinese: National food safety standard - Food contact materials and products - Determination of migration of 2

GB/T 33492-2024_Chinese: Management specification of second-hand goods exchange market (Chinese: 二手货交易市场经营管理规范)

GB/T 45128-2025_Chinese: Plastics - Determination of water content (Chinese: 塑料 含水量的测定)

GB 17353-2024_Chinese: Protective devices against unauthorized use for motorcycles and mopeds (Chinese: 摩托车和轻便摩托车防盗装置)

GB/T 7143-2025 Chinese PDF (GB /T7143-2025) GB/T 44990-2024 English versions: GBZ42749GB T 7143 2025_Chinese: Methods for chemical analysis of silica sand for foundry (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 7143 2025