GB/T 19520.20-2023 Chinese PDF (GB/T19520.20-2023) GB/T 45431-2025 English versions: GB/T 45556-2025

English versions: GB/T 45556-2025

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)

GB/T 13603-2023_Chinese: Marine battery installation (Chinese: 船舶蓄电池装置)

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

GB/T 44886

GB/T 19520.20-2023 Chinese PDF (GB/T19520.20-2023) GB/T 45431-2025 English versions: GB/T 45556-2025GB 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