LED is short for light emitting diode. The basic structure is a light emitting semiconductor placed in a shelf with lead wire, and the surrounding is sealed with epoxy resin to protect inner core wire. The unit for luminous flux is lumen, which can tell how many light 1 wattage of source can emit. Neither normal incandescent lamp nor fluorescent lamp can surpass led high bay , since it can reach hundreds of lumen. Apart from that, the 50,000 hours lifetime of LED high bay is much longer than 200 hours of fluorescent lamp and 1,000 hours of incandescent lamp. Moreover, being made by non-poisonous material, LED lights won’t pollute the environment like fluorescent lamp containing mercury, and LED lights are recyclable.