用不着的化工询盘，有需要的可以试试 求购：4,4'-diaminodicyclohexylmethane, mixture of isomers(1761-71-3) Quantity: 1.000,00 kg. Quality Standards: pure >99 % Company : as chem s.r.l. Country:Italy Contact : Ottolini Email: aschemsrl@gmail.com Tel : 39-049-9387585
