| 英文名称: | | 2-Oxepanone, polymer with 1,4-butanediol and 1,1'-methylenebis[4-isocyanatobenzene] | | 2-oxepanone, polymer with 1,4-butanediol and 1,1'-methylenebis[4-isocyanatobenz | | 2-oxepanone, polymer with 1,4-butanediol and | | 2-Oxepanone,polymer with 1,4-butanediol and 1,1'-methylenebis[4-isocyanatobenzene] |
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