... round adjustable high lumen 15w led downlight 1,Material:Aluminum,car/die-casting aluminum lamp body, ... aluminum housing,and better heat dissipation,light decay less,live longer2,Brand LED cold ... -grade optical lenses,optical loss,good illumination 4,high-power transformers ... way of an overall heat sink,a single heat lamp beads column and ... ;CCC About YUQUAN:Specialized in LED for 10 years,YUQUAN do have ...