The company introduced thelatest inte rnational JP 8000 HVOF system produced by Praxair Surface Technology Company.The equipmentand technology has the obvious quality advantage comparedwith the traditional "plasmaspray".Its spray speed is 3.5 timesfaster than the speed of sound,much higher than "plasma spray", so it has astrength combination of coating and substrate, 3 times to 4 times than "plasma spray".It much stronger than "plasma spray" in coating hardness and density. " Supersonic spray" and "plasma spray" used different materials,the latter use powder coating, the coating of granulated com bination of high value density (G/CC- said seepage rate) it’s easy to fall off.Wile the former use the expensive imported materials, the coating to massive combination,delicate surface, difficult to pene trate and fall off, and can be ground to a mirror.