... , weight more than aluminumb).Aluminium alloy Step: Surface bright, Light weight, High strength, Corrosion resistance, Easy to clean and ... -colora).Classic black for the customers staple choiceb).Multi-Colored (red, blue, green, gray, etc. ) that you can be based ... b).Center lubricating system (as custome's request);c).The indicator light of operation direction. (Intelligent machine must be have or ...