... Lamp,LED baylight,LED Mining lamp,LED miner light,Highbay,Led bay light,High bay luminaire,Commercial led lighting Watt:20W,,40W,70W ... to vapor,Condenser,Liquid Return,Heat out.Gear box:Die-casting aluminium gear box,big&small different sizes availableColor:warm white,pure ... . *Integrative design for heat pipe heat sink and gear box*Good heat transferring and dissipating*Energy saving system,saving much ...