There are various of materials in producing led high bay , with the research and development cost contained, mass production can’t be realized; therefore the cost for making LED high bay is high. The aftersales of lights are to be provided by dealers, and good service costs more. If the price is low, then service quality can’t be guaranteed. Normal household lights are widely used, with the fierce competition, their prices are relatively transparent. However, light-fixtures are more individualized and rather high-end, and the customers are not so sensitive to prices. In order to protect the interest of manufacturers, dealers and customers, it will become a trend to mark LED Lights clearly.