1. Investment casting of maximum line length is 700 mm, easy to make the length of under 200 mm, maximum weight about 100 kg, generally used for 10 kg.2. Investment casting size tolerance 20 mm + / - 0.13 mm, 100 mm + / - 0.30 mm, 200 mm + / - 0.43 mm, and small dimension Investment is not easy to achieve within + / - 0.10 mm.Angle tolerance is + / - 0.5 ~ + / - 2.0 degrees, Investment castings minimum thickness of 0.5 ~ 1.5 mm.Investment casting surface roughness Rmax about 4 s ~ 12 s.3. Investment casting material almost without any limitation, such as aluminum alloy, magnesium alloy, titanium alloy, copper alloy, various kinds of steel, cobalt and nickel based heat resistant alloy, hard materials.4. Investment casting production of complex shape workpiece, good dimensional accuracy and machining.5. Save material waste Investment castings, and can be mass production.6. Investment casting is widely used in jet engines, gas turbine, steam turbine, aircraft parts, internal combustion engines, vehicles, food machinery, printing machinery, paper machinery, compressor, valves, pumps, measuring instrument, sewing machines, weapons, office machinery, and other machine parts.