Chongqing Yi Yang Enterprise Development Co., Ltd. was founded in 1997 by Mr. Lin Ying Chen from Taiwan to introduce the technology, resources, talents, China's earliest professional R & D, production, sales of international standards of ultra-pure water equipment wholly foreign-owned enterprises. The company is headquartered in Hsinchu, Taiwan, approved by the State Council for Foreign Trade and Economic Cooperation to invest in Chongqing plant, and in the same year will be "Ekopu (Aquapro)" this international brand into China into the Chinese market for ultrapure water equipment.