... light source, photosynthetic efficiency high, show color of the high, no radiation pollution. Material: Aluminium Die Casting ... HZPower factor > 0.95LED efficiency 90 ~ 100 Lm/WThe initial flux (Lm) 1800 ~ 2000 and 2700 ~ 3000 megabytesLamps ... ) > 50000Dimension:38*40mmPurpose: the city bright, bringing lighting, river, bridge lighting. Specializing in the production of waterproof antirust dustproof ...