LED high bay is widely used for large scale lighting and normally hung at a higher place. Due to the purposes of anti-corrosion, anti-dust and water-proof as well as explosion-proof and so on, aluminum, aviation aluminum, PC, stainless steel and other materials are mostly used in high bay lights. Based on different applications, high bay lights can be divided into condenser type and astigmatism type. The electrical box can be integrated or split, and both designs should deeply consider its cooling function. Applications: Factory, power plant, steel mill, workshop, warehouse, stadium, waiting room, bus station, petrol station, airport, shopping mall, supermarket and other spacious places.