... sand, etc? Investment casting ,Resin coated sand casting,Coated sand casting What types of metals do you cast in? Ductile iron, ... you have spectra-analysis equipment in-house? Brinell's machine ,Metalloscope , SpectrometerPhoto-electric direct reading ,Sulfuric acid ... and if so, what types? CNC, Drilling machine, Milling machine, Boring machine, Planting machineDo you offer surface coatings – powder, ...