China GCLE 7-Phenylacetamide-3-chlorormethyl-3-cepham-4-carboxylic Acid P-meth-oxybenzyl-ester Suppliers, China GCLE 7-Phenylacetamide-3-chlorormethyl-3-cepham-4-carboxylic Acid P-meth-oxybenzyl-ester Manufacturers.