Chung Mao Chemical was established in 1973 (Year 62 of the Republic of China) as a professional manufacturer specializing in high-purity etching chemicals for the electronics and semiconductor industries, as well as environmental chemicals for water treatment. It is currently the largest producer of ferric chloride in Taiwan and the only chemical plant in Asia that meets water treatment standards for rivers, lakes, groundwater, and drinking water. With an annual production capacity of 20,000 tons of ferric chloride, the company not only fulfills domestic industrial demand but also expands its reach to Southeast Asia.