... Weight:0.1-5000kg4) Processes: sand casting process, investment casting process (silicon soil process and water glass process), ... permanent mold casting, forged parts,5) Manufacturing equipment (foundry used): cupola, electric furnace, resin-bonded, dry sand ... ,normal lathe, line cutter etc.6) Testing equipment (foundry used): elongation tester, hardness tester, metallographic microscope, spectrometer ...