... ring, steel sheet, cooling channel,profile skirt.Graphite spray, graphite print Piston,engine piston for various brands ... sheet, cooling channel,profile skirt.Graphite spray, graphite printin6.Surface Treatment: Graphite spray, graphite printing,anodic oxygenation and tin plating ... )and vertical aluminium melting furnace(Germany)9.Graphite printing machine10.Top anodizing production line11.Ultrasonic ...