GB/T 29711-2023 Chinese PDF (GB/T29711-2023) GB/T 44981-2024 English versions: GB/T 26925-2025

English versions: GB/T 26925-2025

GB/T 44995-2024_Chinese: Polypropylene packaging container - Guidelines for the construction of initial screening testing methods for doped with recycled plastic (Chinese: 聚丙烯包装容器 掺杂回收塑料初筛测试方法构建指南)

GB/T 21836-2024_Chinese: Manganous manganic oxide (Chinese: 四氧化三锰)

English versions: GB/T 21833

GB/T 33492-2024_Chinese: Management specification of second-hand goods exchange market (Chinese: 二手货交易市场经营管理规范)

GB/T 29711-2023 Chinese PDF (GB/T29711-2023) GB/T 44981-2024 English versions: GB/T 26925-2025GB T 29711 2023_Chinese: Non destructive testing of welds Ultrasonic testing Characterization of discontinuities in welds (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 29711 2023