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)

GB/T 11856

GB/T 26925-2025_Chinese: Water saving enterprises - Fossil fired plant (Chinese: 节水型企业 火力发电行业)

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