GB/T 45439-2025 Chinese PDF (GB /T45439-2025) GB/T 22452-2025 English versions: GB/T 15180-2025

English versions: GB/T 15180-2025

English versions: GB/T 33555-2025

GB/T 45419-2025_Chinese: Emblem of the Young Pioneers of China (Chinese: 中国少年先锋队队徽)

GB/T 45141-2025_Chinese: Test method for modified fouling index of reverse osmosis feed water (Chinese: 反渗透进水修正污染指数测定方法)

GB/T 4447-2025_Chinese: Ships and marine technology - Sea-going vessels - Windlasses and anchor capstans (Chinese: 船舶与海洋技术 海船 起锚机和起锚绞盘)

GB/T 45439-2025 Chinese PDF (GB /T45439-2025) GB/T 22452-2025 English versions: GB/T 15180-2025GB T 45439 2025_Chinese: Technical specification for the application of traceability two dimensional code on fuel gas cylinders and fuel gas cylinder valves (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45439 2025