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GB/T 17529.1-2023 Chinese PDF (GB/T17529.1-2023) GB/T 18314-2024 2-2025_Chinese: Uncut finished spectacle lenses

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2-2025_Chinese: Uncut finished spectacle lenses - Part 2: Power-variation (Chinese: 眼镜镜片 第2部分：渐变焦)

ethylene glycol and dimethyl ether (Chinese: 甲醇、乙二醇和二甲醚单位产品能源消耗限额)

English versions: GB/T 13523-2024

GB/T 27432-2025_Chinese: Technical specifications for remote assessment of laboratory (Chinese: 实验室远程评审技术规范)

4-butanediol

GB/T 17529.1-2023 Chinese PDF (GB/T17529.1-2023) GB/T 18314-2024 2-2025_Chinese: Uncut finished spectacle lensesGB T 17529. 1 2023_Chinese: Acrylic acid and acrylates for industrial use Part 1: Acrylic acid for industrial use (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 17529. 1 2023

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