GB/T 15558.4-2023 Chinese PDF (GB/T15558.4-2023) GB/T 45138-2024 English versions: GB/T 14020-2024

English versions: GB/T 14020-2024

maintenance and improvement of a GB/T 23331 energy management system (Chinese: 能源管理体系 实施、保持和改进GB/T 23331能源管理体系指南)

GB/T 45602-2025_Chinese: Ships and marine technology - Adjustable roller-type chain stoppers (Chinese: 船舶与海洋技术 可调式滚轮闸刀掣链器)

GB/T 14271-2024_Chinese: Test method for the yield of greasy wool and raw cashmere - Oil pressure method (Chinese: 毛绒洗净率试验方法 油压法)

GB/T 14795-2023_Chinese: Natural rubber - Vocabulary (Chinese: 天然橡胶 术语)

GB/T 15558.4-2023 Chinese PDF (GB/T15558.4-2023) GB/T 45138-2024 English versions: GB/T 14020-2024GB T 15558. 4 2023_Chinese: Buried polyethylene(PE) piping systems for the supply of gaseous fuels Part 4: Valves (Chinese: PE 4) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 15558. 4 2023