GB/T 28780-2024 Chinese PDF (GB/T28780-2024) GB/T 27995.1-2025 English versions: GB/T 17821-2025

English versions: GB/T 17821-2025

1-2024_Chinese: Switches for household and similar fixed electrical installations - Part 1: General requirements (Chinese: 家用和类似用途固定式电气装置的开关 第1部分：通用要求)

GB/T 45342-2025_Chinese: Vitreous and porcelain enamels - Inside and outside enamelled valves and pressure pipe fittings for untreated and potable water supply - Requirements and testing (Chinese: 搪瓷制品和瓷釉 未处理饮用水供应系统用内外表面搪瓷的阀门和压力管配件 要求和试验方法)

GB/T 45440-2025_Chinese: E-commerce housekeeping - Ability information description of housekeeping service personnel (Chinese: 电子商务家政 家政服务人员能力信息描述)

GB/T 28780-2024 Chinese PDF (GB/T28780-2024) GB/T 27995.1-2025 English versions: GB/T 17821-2025GB T 28780 2024_Chinese: Safety of machinery Integral lighting system used for machines (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 28780 2024