GB/T 30966.4-2023 Chinese PDF (GB/T30966.4-2023) GB/T 45443-2025 2-2023_Chinese: Buried polyethylene(PE) piping systems

2-2023_Chinese: Buried polyethylene(PE) piping systems for the supply of gaseous fuels - Part 2: Pipes (Chinese: 燃气用埋地聚乙烯（PE）管道系统 第2部分：管材)

English versions: GB/T 45484-2025

18-2024_Chinese: Safety requirements for electrical equipment for measurement

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 23453-2025_Chinese: Natural limestone slab for building (Chinese: 天然石灰石建筑板材)

GB/T 30966.4-2023 Chinese PDF (GB/T30966.4-2023) GB/T 45443-2025 2-2023_Chinese: Buried polyethylene(PE) piping systemsGB T 30966. 4 2023_Chinese: Wind energy generation systems Communication for monitoring and control of wind power plants Part 4: Mapping to communication profile (Chinese: 4) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 30966. 4 2023