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GB/T 19720-2024 Chinese PDF (GB/T19720-2024) GB/T 45575-2025 GB/T 5483-2024_Chinese: Natural gypsum (Chinese:

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GB/T 5483-2024_Chinese: Natural gypsum (Chinese: 天然石膏)

GB/T 23453-2025_Chinese: Natural limestone slab for building (Chinese: 天然石灰石建筑板材)

English versions: GB/T 45123-2024

English versions: GB/T 12008

GB/T 19720-2024 Chinese PDF (GB/T19720-2024) GB/T 45575-2025 GB/T 5483-2024_Chinese: Natural gypsum (Chinese:GB T 19720 2024_Chinese: Jewellery and precious metals Determination of platinum and palladium Gravimetry using ammonium chloride and dimethylglyoxime (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19720 2024

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