... ,iron etc. 2. Precision Casting,lox wax casting,investment casting 3.OEM Precision Casting,lox wax casting Casting: investment casting ,precision casting, lost wax casting ,soluble glass process complex ... : glass rays electrolytic polishing, coating, varnishing, bromzing. Passivating, grinding, polishingAnalysis wet chemically or by x-ray spectrometer. 3-coorcdinate. Computerised numerical ...