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31-2025_Chinese: National food safety standard - Food contact materials and products - Determination of residual and migration of vinyl chloride
GB/T 44952-2024_Chinese: Technical requirements for ground electric field monitoring (Chinese: 地面电场监测技术要求)
English versions: GB 15093-2025
1-2025_Chinese: Quality requirements for organic acids - Part 1: Citric acid (Chinese: 有机酸质量要求 第1部分：柠檬酸)
YY 0271.2-2024 Chinese PDF GB/T 45305.4-2025 31-2025_Chinese: National food safety standardYY 0271. 2 2024_Chinese: Dentistry Water based cements Part 2: Resin modified cements (Chinese: 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: YY 0271. 2 2024
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