... wax casting.3) Machining: turning, milling, drilling, grinding, threading, CNC machining.4) Finishing: sand blasting, polishing, plating, acid treatment, anodizing, PVC powder ... , USA, Canada, Austrialia / Over 90% for exportingMain ProductsRailway parts, Auto parts, Marine Parts, Investment castings, Forging parts,MachinedParts, etc. Investment casting also called "lost-wax process ...