... yellow, bule, red, green.3) Best thermal management with aluminum housing and copper fittings 4) Light source: 3*1W 5 ... No UV or IR radiation.7. Best thermal emitting with aluminum alloy housing.8. Energy efficient and environmental friendly. Payment ... Application: 1.Hotel,Conference&Meeting room,institution building2.theatre, stage and museum lighting, etc. Replacement for halogen lamps,incandescent ...