There is no OEM. According to Netease information. As of August 9, 2023, Dr. air disinfection machine was not produced by OEM, but by his own manufacturer, which was produced by Shenzhen Dongsen Environmental Technology Co., Ltd. Bosch's car air purifier design has a strong German industrial flavor. In the square fuselage, the surface is dense but not miscellaneous, and the arc angles at the corners are clean and neat, and the design is concise without losing its generality.