Qingdao Hecheng Pharmaceutical Co., Ltd. is one of the well-known manufacturers of thiophene derivatives, many years we have focused on thiophene development and production of thiophene . Committed to provide high quality pharmaceutical intermediates and electronic chemicals for domestic and foreign customers. The formation of an annual Thiophene 500 tons, 2 - thiophene ethanol 200 tons and other thiophene derivatives, becoming the largest production of the domestic thiophene and derivativescompanies.