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English versions: GB 1903
English versions: GB/T 23025-2024
English versions: GB/T 22251-2024
GB/T 22939
7-2025_Chinese: Plastics - Polyether polyols for use in the production of polyurethane - Part 7: Determination of basicity (Chinese: 塑料 聚氨酯生产用聚醚多元醇 第7部分：碱性物质含量的测定)
GB 31648-2025 Chinese PDF GB/T 17263-2025 English versions: GB 1903GB 31648 2025_Chinese: National food safety standard Code for pollution control of dioxins and polychlorinated biphenyls in food (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 31648 2025
