This product is composed of a box, a workroom, an electric heater and a temperature control system. It can work under the set temperature and vacuum conditions. It is suitable for the vacuum drying of materials, parts, complete machines and other products in the pharmaceutical and chemical industry, electronics, instruments, meters and other industries. This type of drying oven is a new product developed for manufacturers of LED photoelectric elements. The vacuum chamber is square. Close the door gently, and the door will automatically suck and vacuum. The vent valve is set in front of the box door, and the operation of air extraction and venting is convenient. This product is not only applicable to the drying and vacuum treatment of LED photoelectric elements, but also applicable to other industries.