... . ultra filter separation undertakes in the normal temperature and lowpressure , with out state change , simple structure ... , hollow fiber ultra filter, sterilization, water tank,and fittings).Ultrafiltration technology instruction(A)Principle of Ultrafiltration :Ultrafiltration ... Ultrafiltration :Colloid(Non-activated silicon,iron and alumium),bacteria,virus and potozoa other microorganisms,in 2000-50 ...