Chia Tai Enterprises International Limited engages in the manufacture and sale of chlortetracycline (CTC) and other related products in Mainland China, the Asia Pacific, the Americas, Europe, and internationally. It operates through two segments, Biochemical and Industrial. The Biochemical segment manufactures and sells CTC premix and CTC hydrochloride products, which are used as feed additives to promote growth of livestock, prevent or cure animal diseases, and enhance feed efficiency under the Shihao and Citifac brands.