... \JIS3.Surface finish: passivated, stain polished, mirror polished, e-coating and so on4.Weight: 0.3-500kgsMain production facility1.Casting facility ... cutting machine, NC milling machine, polishing machine.Heat treatmentannealing, termpering, quenching, normalizing, solid solution.Testing facilityspectrometer, tensile test machine, hardness test machine, mircoscope. China sewing machine parts ...