... /iron/brass etc5.processing: stamping,punching, machining,bending,welding,threading,grinding ,milling,machining,lathe,assembling etc6.press:from 5MT to 400MT7 ... -inhibiting oils,Electrophresis ,Paints and primers,blacking,etc8.industry:these parts are used in automotive,electrical ,building,furniture, machine assembly,computer ...