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English versions: GB/T 18774-2023
GB/T 20236-2025_Chinese: Accelerated outdoor weathering test methods for nonmetallic materials using concentrated natural sunlight (Chinese: 非金属材料的聚光加速户外暴露试验方法)
English versions: GB/T 16472-2024
English versions: GB/T 18757-2025
GB/T 29456-2025_Chinese: Energy management systems - Guidance for the implementation
GB/T 19267.7-2023 Chinese PDF (GB/T19267.7-2023) GB/T 45525.1-2025 English versions: GB/T 18774-2023GB T 19267. 7 2023_Chinese: Forensic sciences Physical and chemical examination of trace evidence Part 7: Gas chromatography mass spectrometry (Chinese: 7 ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19267. 7 2023
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