GB/T 19520.20-2023 Chinese PDF (GB/T19520.20-2023) GB/T 45431-2025 GB/T 21270-2025_Chinese: General quality for

GB/T 21270-2025_Chinese: General quality for food filling (Chinese: 食品馅料质量通则)

GB/T 45607-2025_Chinese: Ships and marine technology - Ship's mooring and towing fittings - Seats for mooring chocks (Chinese: 船舶与海上技术 船舶系泊和拖带设备 系泊导缆孔底座)

1-2025_Chinese: Configuration file exchange for industrial control system HMI - Part 1: General information (Chinese: 工业控制系统人机接口组态文件交互 第1部分：通用信息)

English versions: GB/T 45329-2025

GB/T 19520.20-2023 Chinese PDF (GB/T19520.20-2023) GB/T 45431-2025 GB/T 21270-2025_Chinese: General quality forGB T 19520. 20 2023_Chinese: Mechanical structures for electrical and electronic equipment Dimensions of mechanical structures of the 482. 6 mm (19 in) series Part 3 108: Dimensions of R type subracks and plug in units (Chinese: 482. 6 mm(19 in) 3 108R) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19520. 20 2023