COB led highbay 30W/50/80/100W material: dia-casting alunimum lumen: 90-100lm/w led ... chip: COB Watt:30w COB led highbay 30W/50/80/100W 1. Taiwan chips, 90-100lm/w . 2. CE, RoHS ... , RoHSWarranty 2 years Beam Angle 120 degrees Power Efficiency:80%Color Temperature Warm white 2,600-3,700K /Neutral White ...