GB/T 45457.2-2025 Chinese PDF (GB /T45457.2-2025) GB/T 44941-2024 GB/T 20882

GB/T 20882

GB/T 45356-2025_Chinese: Polypropylene(PP) piping systems for non-pressure buried drainage and sewerage (Chinese: 无压埋地排污、排水用聚丙烯（PP）管道系统)

GB/T 32934-2025_Chinese: Chinese naming of global tropical cyclones (Chinese: 全球热带气旋中文命名)

classification and model compilation method for complete sets of equipment for fiber carbonization production (Chinese: 纤维碳化生产成套装备的术语、分类及型号编制方法)

GB/T 45457.2-2025 Chinese PDF (GB /T45457.2-2025) GB/T 44941-2024 GB/T 20882GB T 45457. 2 2025_Chinese: Non destructive testing of heavy duty gas turbine blades and vanes Part 2: Visual testing (Chinese: 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45457. 2 2025