GB/T 12385-2025 Chinese PDF (GB /T12385-2025) GB/T 15604-2024 GB/T 17670-2025_Chinese: Unified coding for

GB/T 17670-2025_Chinese: Unified coding for natural stone (Chinese: 天然石材统一编号)

English versions: GB 20943-2025

GB/T 20243

GB/T 17216-2025_Chinese: Hygienic requirement for peacetime utilization of civil air defence works (Chinese: 人民防空工程平时使用环境卫生要求)

7-2024_Chinese: Proton exchange membrane fuel cells - Part 7: Test method of carbon paper properties (Chinese: 质子交换膜燃料电池 第7部分：炭纸特性测试方法)

GB/T 12385-2025 Chinese PDF (GB /T12385-2025) GB/T 15604-2024 GB/T 17670-2025_Chinese: Unified coding forGB T 12385 2025_Chinese: Standard test methods for sealability of gaskets for pipe flanges (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 12385 2025