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GB/T 30757-2024 Chinese PDF (GB/T30757-2024) GB/T 45121-2024 English versions: GB/T 17436-2025
GB/T 30757-2024 Chinese PDF (GB/T30757-2024) GB/T 45121-2024 English versions: GB/T 17436-2025
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English versions: GB/T 17436-2025
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GB/T 30757-2024 Chinese PDF (GB/T30757-2024) GB/T 45121-2024 English versions: GB/T 17436-2025GB T 30757 2024_Chinese: Classification of basic dense shaped refractory products containing from 7% to 50% carbon (Chinese: 7%50%) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 30757 2024
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