สำนักงานอุตสาหกรรมจังหวัดสมุทรปราการ Brushing commences after the metal is sanded and cleaned. An abrasive brush moves within a circular motion within the metal floor to get rid of defects from the area. Although brushing is a wonderful metal finish on its own, It isn't generally the ultimate finishing procedure when producing metals. https://beediadiamond.com/catalog/polishing-brush