... antirust powder designed for the corrosion protection of self-seal system. VCI powder,SF/D-331 is watersoluble, spayable volatile corrosion ... using air pressure, air hose or sandblast, large conventional sandblasting system or hand blast can also be used. For powder application ... coated metal unless it pass testing VCI powder, anticorrosive powder bag, VpCI powder, corrosion inhitibors for VCI paper