98276-57-4, 2,4-Diaminobenzaldehyde
+86 21 61629020
http://www.bidepharmatech.com/
98276-57-4, 苯(甲)醛,2,4-二氨基-, 2,4-DIAMINOBENZALDEHYDE
86 25 58353800
http://www.rennotech.com
[86] 2154173791
http://www.youchemicals.com
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