This is Tianjin Zhijingweiye Export Co., Ltd. here, manufacturer of Zinc Oxide, Caustic Soda, STPP, Acetic Acid, Formic Acid and other chemicals with ISO 9001 certificate covering for very good quality in China. If you are in need of any pls send us your quantity and port for a competitive offer. Wish our products will be helpful for your business. Waiting for your prompt reply.