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CAS NO:28930-93-0
CAS:
28930-93-0
英文名称:
ncarboxylic acid and 1,1'-methylenebis[4-isocyanatobenzene]
1,4-benzenedicarboxylic acid, polymer with1,3-dihydro-1,3-dioxo-5-isobenzofurancarboxylic acid and
