GB/T 22877-2023 Chinese PDF (GB/T22877-2023) GB/T 7358-2025 5-2024_Chinese: Safety requirements for electrical

5-2024_Chinese: Safety requirements for electrical equipment for measurement

1-2024_Chinese: Telecontrol equipment and systems - Part 2: Operating conditions - Section 1: Power supply and electromagnetic compatibility (Chinese: 远动设备及系统 第2部分：工作条件 第1篇：电源和电磁兼容性)

GB/T 44910-2024_Chinese: Amber grading (Chinese: 琥珀分级)

GB/T 20907-2024_Chinese: Technical specification for automatic fare collection system of urban rail transit (Chinese: 城市轨道交通自动售检票系统技术条件)

GB/T 22877-2023 Chinese PDF (GB/T22877-2023) GB/T 7358-2025 5-2024_Chinese: Safety requirements for electricalGB T 22877 2023_Chinese: Paper, board, pulps and cellulose nanomaterials Determination of residue (ash content) on ignition at 525 (Chinese: 525) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 22877 2023