| 英文名称: | | benzenesulfonic acid, 2,4-diamino-, calcium salt (2:1), polymer with 1,3-benzen | | ediamine, 1,3-benzenedicarbonyl dichloride and 1,4-benzenedicarbonyl dichloride | | benzenesulfonic acid, 2,4-diamino-, calcium salt (2:1),polymer with 1,3-benzenediamine, 1,3-benzenedicarbonyl dichloride and1,4-benzenedicarbonyl dichloride |
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