8 stage ro (ro +uv+uf+tds cantroler+mineral catrage )
7 stage ro (ro+tds cantroler +alkaline filter )
8 stage ro (ro +uv+uf+tds cantroler+copper alkaline )
8 stage ro (ro +uv+uf+tds cantroler+copper filter )
6 stage ro (ro +uv+uf+tds cantroler )