GB/T 19520.21-2023 Chinese PDF (GB/T19520.21-2023) GB/T 14598.1871-2024 English versions: GB 44498-2024

English versions: GB 44498-2024

English versions: GB/T 32151

12-2023_Chinese: Biological evaluation of medical devices - Part 12: Sample preparation and reference materials (Chinese: 医疗器械生物学评价 第12部分：样品制备与参照材料)

GB/T 4354-2025_Chinese: Hot-rolled quality carbon steel wire rods (Chinese: 优质碳素钢热轧盘条)

English versions: GB 30000

GB/T 19520.21-2023 Chinese PDF (GB/T19520.21-2023) GB/T 14598.1871-2024 English versions: GB 44498-2024GB T 19520. 21 2023_Chinese: Mechanical structures for electrical and electronic equipment Dimensions of mechanical structures of the 482. 6 mm (19 in) series Part 3 109: Dimensions of chassis for embedded computing devices (Chinese: 482. 6 mm(19 in) 3 109) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19520. 21 2023