GB/T 18688-2023 Chinese PDF (GB/T18688-2023) GB/T 26882.4-2024 English versions: GB/T 17643-2025

English versions: GB/T 17643-2025

English versions: GB/T 44879-2024

6R/120 for relative scuffing load-carrying capacity of high EP oils (Chinese: 齿轮 FZG试验程序 第2部分：高极压油的相对胶合承载能力FZG阶梯加载试验A10/16

English versions: GB/T 45585-2025

socket-outlets and couplers for industrial purposes - Part 6: Direct current(DC) plugs

GB/T 18688-2023 Chinese PDF (GB/T18688-2023) GB/T 26882.4-2024 English versions: GB/T 17643-2025GB T 18688 2023_Chinese: Agricultural irrigation equipment Pressure losses in irrigation valves Test method (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 18688 2023