METHOD FO PAPERMAKING WATER-FILTERING AND APPARATUS

摘要

a vat; a gold net member which is disposed at the lower portion of the vat and has a gold net installed in a gold net supporting frame and a grid supporting unit installed in the lower portion of the gold net; and a water bag which comprises a water feeding pipe and a water ejecting pipe. The gold net has a concave-convex unit for forming a silver coin.