According to Sohu. Com, Denys water purification system, a German brand of high-end imported water purifier, and a high-end ecological purification brand of Oster Environmental Protection Group, focus on customizing the whole house water purification system, air purification system and food purification system, and create a whole house ecological purification system, which is known as the Trinity. 20 15 Established Shenzhen Aoside Environmental Protection Co., Ltd. with independent legal personality in Shenzhen, China, responsible for the research and development, production, sales and service of "DANESS Deneys" brand in China.