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By certification 
Dongkun metals also performs most of the NDT functions, including various penetrant, magnetic powder and radiographic tests to support investment casting. We also provide a single source of responsibility for finishing, polishing, electroplating and other auxiliary operations.
Silica Sol Precision Casting Titanium alloy Socket Sleeve for machinery
Investment Casting Titanium alloy bracket for Golf Accessories
Investment Casting Titanium alloy bracket for Golf Accessories
http://www.dk-metals.com/
