Changling water purifier filter u✔φδ>ses a physical principle of ul<≥trafiltration and mi✘☆crofiltration compound adsorption filte₽↕‌ r, is purely physical screening pro±₽cess. Water purificati<₽™on and water production does noγ≥'t matter. When the water purifier₽←±ε is small, the quali©♠™$ty of the purified water is stiα®ll qualified, safe to use.