Dongguan Zefeng Purification Equipment Co., Ltd. was established in 2013. It has sheet metal, stamping, powder coating, assembly, testing and other product manufacturing supporting facilities, with a construction area of about 15,600 square meters.
    In 2014, it participated in the compilation of national standards: "Air Purification Device for Ventilation System", industry standards "Residential Fresh Air System Specification" and "Fresh Air Purifier".
    In 2015, more than 50,000 cabinet fresh air fans were produced, and representative products include A380 and Little Prince 450.
    In 2016, through the development of OEM cooperation with more than 80 domestic and foreign brands, the company produced fresh air purification equipment with an annual output value of 150 million yuan.
    In 2017, CCTV's "Quality" column interviewed Zefeng, "Using the attitude o