The fine filter is equipped internally with honeycomb type filter core or smelting-spraying filter core and is applied to production water filter, wine rough filter, medicine filter, acid and base filter, safe filter before RO device for drinking water, living water, electronics, printing and dyeing, textile, environmental. It possesses the advantages of great flow and low material cost, Its internal surface and external surface are processed respectively with polishing or sub-polishing, and deactivating.

The export and import, the allocation of sewage pipeline with auto-control valve, the controller that can automatically backwashing.