GB/T 18876.2-2024 Chinese PDF (GB/T18876.2-2024) GB/T 20972.2-2025 GB/T 45356-2025_Chinese: Polypropylene(PP) piping systems

GB/T 45356-2025_Chinese: Polypropylene(PP) piping systems for non-pressure buried drainage and sewerage (Chinese: 无压埋地排污、排水用聚丙烯（PP）管道系统)

2L至220L的不可拆盖（闭口）桶)

GB/T 32825-2024_Chinese: Technical parameters and requirements for three-phase dry-type tridimensional wound core power transformers (Chinese: 三相干式立体卷铁芯电力变压器技术参数和要求)

GB/T 45395-2025_Chinese: Information technology - Technical requirements for MiniApp accessibility (Chinese: 信息技术 小程序应用无障碍技术要求)

English versions: GB/T 45441-2025

GB/T 18876.2-2024 Chinese PDF (GB/T18876.2-2024) GB/T 20972.2-2025 GB/T 45356-2025_Chinese: Polypropylene(PP) piping systemsGB T 18876. 2 2024_Chinese: Standard practice for determining the metallographical constituent and inclusion content of steels and other metals by automatic image analysis Part 2: Determining the inclusion ratings of steels by automatic image analysis and stereology (Chinese: 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 18876. 2 2024