... without bubbles,acid-resistance,good adhersion. 1,Material Ratio in Grinding:Pre-grinding Powder: 100Water: 40-502,Specification ... products, they should be soaked in water for 24 hours or milled for a while. Coating thickness and firing ... should be soaked for 24 hours in water or milled for a while in proportion of 100/ 40, then ... grinding Powder for Power Plant Corrugated Plates A-8005 made in china