... power supply 3.Aluminum alloy heat sink 4.CE,RoHs LED high bay light, bridgelux chip led high bay light ,200W led high bay light with ... sink with good quality heat dissipation, aluminum alloy equipment box, high strength, IP 64,small reflector cap for focusing the light, big ... Using and installing instructions As Picture No.1 Showed, Install reflector on the heat sink, wrest fixed screws very tightly ...