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.
淡英斑岩过滤器和淡英斑岩滤水器是我公司世界独创术,我们采用DMMF(双发动机多重过滤器)系统,该系统已获专利。
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.
淡英斑岩过滤器和淡英斑岩滤水器是我公司世界独创术,我们采用DMMF(双发动机多重过滤器)系统,该系统已获专利。
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