... kinds of tension pulley 2) made-to -order 3)from small to big 4) produce with supplized drawing or samples ... totally depend on our customers' requirements ,they are made from various metals . These enclosures are used in a variety ... ,Brackets,Bushings,Connectors ,Electronic / Electrical Enclosures,EMI Shielding Barriers,Feed Thru Terminals,Flanges,Headers,Heat Plates / Sinks,nserts,Labels,Mechanical ...