Company Description
Beijing chemder co.,Ltd. set up in 2004.
Beijing Chemder Co. Ltd have been engaging in researching new chemical technologies and selling new products.Now we supply 4-chlorophthalic anhydride (CAS:118-45-6)in the purity of 99.0%,which is mainly used to synthesis biphenyltetracarboxylic di-anhydride ,one of the most important materials of polyimide.