Elvan filter and Elvan water filter are our unique technology in the world and we adopted DMMFDouble Motor Multi Filters system of which is patented.
淡英
和淡英水是我公司世界独创
术，我们采用DMMF（双发动机多重）系统,该系统已获专利。
；脉；脉之大脉Elvan filter and Elvan water filter are our unique technology in the world and we adopted DMMFDouble Motor Multi Filters system of which is patented.
淡英和淡英水是我公司世界独创术，我们采用DMMF（双发动机多重）系统,该系统已获专利。
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