led high bay has used to be very costly in the past and many companies could not afford it. With the improved optical and electronic technology, the price of led high bay has declined for many years. Nowadays, led high bay has been feasible for many companies. Thousands of warehouse has equipped with led high bay lighting , and adoption continues to grow due to recent drops in fixture pricing and technology improvements which both lead to savings that can add up to a short ROI. Reducing maintenance costs have always been attractive to many companies’ manager. With long rated lifespan of led high bay, led has been used in many applications.