There are two major trademarks: "D-FAN" for fan series, "DOSENSE" for motor series, "D-FAN" fan is famous for its large air volume, low noise, long life and good stability. Our factory strictly operate in accordance with the requirements of the ISO9001 quality management system and ISO14001 environmental management system. Our cooling fans have passed UL, CUL, CE, TUV, RoHS and other product safety certifications.