Generally, the stability and quality of LED Lights are greatly affected by the heat sink of the light itself. The structure of an led high bay is generally composed by LED chip, heat sink, driver and lenses. Therefore, heat sink is an important component which can affect product life span.2. LED light driver technologySince LED is a sensitive semiconductor component with minus temperature character, the application of LED requires for stable working condition and protection. Thus appears the concept of driver. Unlike normal incandescent light that can connect 220V direct current, LED components have severe requirements over driver.