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English versions: GB/T 31900-2024
GB/T 42968
307-2025_Chinese: National food safety standard - Determination of formaldehyde in foods (Chinese: 食品安全国家标准 食品中甲醛的测定)
GB/T 45531-2025_Chinese: Guidelines for establishing single submission portal of international trade (Chinese: 国际贸易单一提交门户建立指南)
12-2024_Chinese: Methods for chemical analysis of gold - Part 12: Determination of silver
GB/T 19267.1-2023 Chinese PDF (GB/T19267.1-2023) GB/T 15558.5-2023 English versions: GB/T 31900-2024GB T 19267. 1 2023_Chinese: Forensic sciences Physical and chemical examination of trace evidence Part 1: Infrared absorption spectrometry (Chinese: 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19267. 1 2023
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