GB/T 5169.49-2024 Chinese PDF (GB/T5169.49-2024) GB 21456-2024 171-2024_Chinese: Ergonomics of human-system interaction

171-2024_Chinese: Ergonomics of human-system interaction - Part 171: Guidance on software accessible design (Chinese: 人-系统交互工效学 第171部分：软件无障碍设计指南)

4-2023_Chinese: Agricultural irrigation equipment - Filters for micro irrigation - Part 4: Granulated media filters (Chinese: 农业灌溉设备 微灌用过滤器 第4部分：颗粒介质过滤器)

1-2024_Chinese: Fire shutter assembly - Part 1: General technical specification (Chinese: 防火卷帘 第1部分：通用技术条件)

GB 21456-2024_Chinese: Minimum allowable values of the energy efficiency and energy efficiency grades for household and similar kitchen appliances (Chinese: 家用和类似用途厨房电器能效限定值及能效等级)

GB/T 45455-2025_Chinese: Tools for moulding - Guide bushes

GB/T 5169.49-2024 Chinese PDF (GB/T5169.49-2024) GB 21456-2024 171-2024_Chinese: Ergonomics of human-system interactionGB T 5169. 49 2024_Chinese: Fire hazard testing for electric and electronic products Part 49: Arc test method Arc ignition test method for materials (Chinese: 49 ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 5169. 49 2024