Multi-function polishing machine can be used for both tank and seal head dish from 500mm~4000 mm diameter As a first manufacturer of tank polishing machine in China ,BOAO has the patent for almost ten years. We are prossional in polishing tanks,vessel,seal head ,range from 500mm~4000 mm diameter ,inner and outside both polished .DP Multifunction Polishing MachineApplication: Multifunction, which ...