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Title Standard No. Implemented On
Trimellitic anhydride for industrial useGB/T 23967-20172018-4-1
Trimellitic anhydride for industrial useGB/T 23967-20092010-2-1
Maleic anhydride for industrial useGB/T 3676-20082008-12-1
Acetic anhydride for industrial usecGB/T 10668-20002000-1-1
Maleic anhydride for industrial useGB 3676-19921992-12-1
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