... state change , simple structure,easy operation, wide usage, and strong general capacity. Condensing ultra filter is widely used ... , hollow fiber ultra filter, sterilization, water tank,and fittings).Ultrafiltration technology instruction(A)Principle of Ultrafiltration : ... Ultrafiltration :Colloid(Non-activated silicon,iron and alumium),bacteria,virus and potozoa other microorganisms,in 2000-50 Dalton ...