How about Zhengzhou Zheng ventilator?

Zheng Fan: I have been to a shop in Zhengzhou Electromechanical Market. I remember it was at No.88/KLOC-0, Gong Ming Road, Erqi District. Last time I went, I saw a fog gun and a range hood. In my impression, the fans in the store are quite complete, and the quality of workmanship looks good. It is still an old brand. There seems to be a factory in Guodian, longhu town, and many kinds of Zheng Tong fog guns, fixed fog guns, tower fog guns, trailer fog guns and multifunctional dust suppression vehicles have been seen.