GB/T 20552-2023 Chinese PDF (GB/T20552-2023) GB 25502-2024 GB/T 45472-2025_Chinese: Prefabricated insulation pipes

GB/T 45472-2025_Chinese: Prefabricated insulation pipes for overhead and utility tunnel (Chinese: 架空和综合管廊用预制保温管道)

GB 29995-2024_Chinese: Norm of energy consumption per unit production of coal-based activated carbon and semi-coke (Chinese: 煤基活性炭和兰炭单位产品能源消耗限额)

1-2025_Chinese: Mobile laboratory - Part 1: General rule (Chinese: 移动实验室 第1部分：通则)

GB/T 45647-2025_Chinese: Technical specification for carbon dioxide recovery and disposal in metallurgical lime kiln (Chinese: 冶金石灰窑中二氧化碳回收处置技术规范)

GB/T 45525

GB/T 20552-2023 Chinese PDF (GB/T20552-2023) GB 25502-2024 GB/T 45472-2025_Chinese: Prefabricated insulation pipesGB T 20552 2023_Chinese: Pacific oyster (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20552 2023