GB/T 42513.2-2023 Chinese PDF (GB/T42513.2-2023) GB/T 42203-2022 GB/T 10739-2023_Chinese: Paper

GB/T 10739-2023_Chinese: Paper

English versions: GB/T 45379-2025

English versions: GB/T 24498-2025

3-2025_Chinese: Lightning protection system components(LPSC) - Part 3: Requirements for isolating spark gaps(ISGs) (Chinese: 雷电防护系统部件（LPSC） 第3部分： 隔离放电间隙（ISGs）的要求)

GB/T 43259

GB/T 42513.2-2023 Chinese PDF (GB/T42513.2-2023) GB/T 42203-2022 GB/T 10739-2023_Chinese: PaperGB T 42513. 2 2023_Chinese: Methods for chemical analysis of nickel alloys Part 2: Determination of phosphorus content Molybdenum blue spectrophotometry (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 42513. 2 2023