Adopting the advanced silicasol shell-process in precision casting, Changlong can guarantee the precision in casting at CT3 level. Holding many advanced CNC lathes together with many other advanced facilities, we can supply broad range of precision castings, such as Machine parts, Marine hardware, Power and hand tool, Valve, Fitting, Hardware, Impeller, Golf head, Saddlery, and Pull Handle. And we also are capable of machining polishing, welding, punching, electropolishing.