GB 5009.137-2025 Chinese PDF GB 31604.31-2025 7-2025_Chinese: Plastics - Polyether polyols

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)

Delivery (PDF in Chinese): 2 working-hours typically

GB 45246-2025_Chinese: Norm of energy consumption per unit production of main wood-based panel products (Chinese: 人造板类主要产品单位产品能源消耗限额)

English versions: GB 45670

GB/T 17436-2025_Chinese: Selection of explosion proof electrical equipment in ship hazardous areas (Chinese: 船舶危险区域防爆电气设备的选用)

GB 5009.137-2025 Chinese PDF GB 31604.31-2025 7-2025_Chinese: Plastics - Polyether polyolsGB 5009. 137 2025_Chinese: National food safety standard Determination of antimony in foods (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 5009. 137 2025