Puyang is a new-booming petrochemical city located in the hinterland of Zhongyuan Oil Field and north of Henan province. Fanxian Senyuan Chemical Industry Co., Ltd. is located in Fan County Private Hi-tech Park in Puyang city, with a land of 38, 000sqm. Fanxian Senyuan Chemical Industry Co., Ltd. is a private joint-stock enterprise established in 2009, with all managers and staffs, and other social funds as investors and shareholders. There are 68 employees in Senyuan, 26 of them are engineers and technicians. At present, Senyuan is a specialized manufacturer and trader of Pyromellitic dianhydride (PMDA) and 1, 2, 4, 5-Benzenetetracarboxylic acid, and the quality of our products can meet the leading standards in the world. Sticking to such philosophy of On the basis of honest business; guided by the leading technology; taking customers as number one priority; to get survival by excellent quality, Senyuan adopts leading method and management system, and has establish a set of unique and Senyuan-featured production management system successfully.