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GBZ27001-2025_Chinese: Conformity assessment - Common elements - Principles and requirements (Chinese: 合格评定 通用要素 原则与要求)
English versions: GB/T 44956-2024
GB/T 28807
English versions: GB/T 21478-2024
GB/T 45418-2025_Chinese: General technical directives for distribution networks (Chinese: 配电网通用技术导则)
GB/T 28799.4-2024 Chinese PDF (GB/T28799.4-2024) GB/T 21711.2-2024 GBZ27001-2025_Chinese: Conformity assessment - CommonGB T 28799. 4 2024_Chinese: Polyethylene of raised temperature resistance(PE RT) piping systems for hot and cold water installations Part 4: Valves (Chinese: PE RT 4) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 28799. 4 2024
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