GB/T 31235-2024 Chinese PDF (GB /T31235-2024) GB/T 21551.4-2024 GB/T 27069-2025_Chinese: Guidelines for the

GB/T 27069-2025_Chinese: Guidelines for the mutual recognition evaluation of product conformity assessment results (Chinese: 产品合格评定结果相互承认评价指南)

English versions: GB/T 23528

GB 12358-2024_Chinese: Gas detection and alarm instruments for workplace - General technical requirements (Chinese: 作业场所环境气体检测报警仪器 通用技术要求)

GB 23826-2025_Chinese: Light-emitting diode variable speed limit signs of motorway (Chinese: 高速公路LED可变限速标志)

GB/T 320-2025_Chinese: Synthetic hydrochloric acid for industrial use (Chinese: 工业用合成盐酸)

GB/T 31235-2024 Chinese PDF (GB /T31235-2024) GB/T 21551.4-2024 GB/T 27069-2025_Chinese: Guidelines for theGB T 31235 2024_Chinese: Technical specification for fittings of 800 kV DC overhead transmission line (Chinese: 800kV) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 31235 2024