... Lamp's Efficiency:>85% 5.LED Chip: Epistar Product Name: LED High Bay LightItemNo: HC460HB 30W/40W/50W ... 12V/24VPower Factor: >0.9Lamp's Efficiency:>85%Led Luminous Efficiency: 100 Lm/wLed Initial Flux: ... 3.9kgs(30W/40W/50W/60W/70W), 5kgs(100W)LED Color: Red, Green, Blue, Yellow, White, ... C~+65°CApplication Area: Mainly used as indoor lighting in industrial building, stadium, commercial market orother ...