?? ?? ?? ???? ?? : +86 (0)575-82040869
???
PRODUCTS+86 (0)575-82040869
sales@catsyn.com
Catsyn? 1,4-Benzenedicarboxylic acid, 2,5-bis[2-[2-(2-methoxyethoxy)ethoxy]ethoxy]-, 1,4-dihydrazide | CAS 121761-43-1?? ?? ??? ?????. ? ??? null??, ???? g/mol??, ??? ????? NLT 98%???.