... Material:carbon steel,stainless steel,aluminum,brass etc Forged Brass PartsProcessing:forging, casting, stamping, machiningMaterial:carbon ... press machine,middle frequency electric heater, air hammer,precision machining, and test facility Surface treatmentPolishing, zinc plating ... (cams, keepers, handle, hinge blade), machinery parts (link rod, shifting fork, crank, rocker), construction machery parts ...