Factory lamps, also known as high bay light, consist of a light source, a lampshade and a lamp base. The lampshade can be used as a lamp controller to change the light distribution curve and light outskirts according to different materials and sizes. According to the shape of the light distribution curve, factory lights can be divided into five types: wide, uniform, deep, and extra deep. Factory lights are generally used in factories, processing workshops, warehouses, large machine tools, etc. The deep lighting type and the extra deep lighting type are used outside tall plants (above 6 metres), while the wide lighting type, the uniform light distribution type and the light distribution type can be used for general lighting (below 6 metres).