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English versions: GB 44022-2024
GB/T 20854-2025_Chinese: Corrosion of metals and alloys - Accelerated testing involving cyclic exposure to salt mist
GB 16809-2024_Chinese: Fire resistant windows (Chinese: 防火窗)
English versions: GBZ27001-2025
English versions: GB/T 23723
GB 20052-2024 Chinese PDF GB/T 45296-2025 English versions: GB 44022-2024GB 20052 2024_Chinese: Minimum allowable values of energy efficiency and the energy efficiency grades for power transformers (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 20052 2024
