GB 4234.9-2023 Chinese PDF GB/T 43018.5-2025 GB/T 45355-2025_Chinese: Polyethylene(PE) piping systems

GB/T 45355-2025_Chinese: Polyethylene(PE) piping systems for non-pressure buried drainage and sewerage (Chinese: 无压埋地排污、排水用聚乙烯（PE）管道系统)

English versions: GB/T 20604-2025

GB/T 45201-2024_Chinese: Specification for social E-commerce platform management (Chinese: 社交电子商务平台管理规范)

GB/T 45610-2025_Chinese: Reclamation code of practice for coal gangue backfilling subsidence area (Chinese: 煤矸石回填塌陷区复垦技术规程)

English versions: GB/T 45303-2025

GB 4234.9-2023 Chinese PDF GB/T 43018.5-2025 GB/T 45355-2025_Chinese: Polyethylene(PE) piping systemsGB 4234. 9 2023_Chinese: Implants for surgery Metallic materials Part 9: Wrought high nitrogen stainless steel (Chinese: 9) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 4234. 9 2023