Large brush】 【sanitation and large snow brush production process much the same way below my text describe the entire production process, for your reference. The first is in the middle hoops. Sanitation brush middle hoop is 1.0 to 1.8 thick iron plate, pressed into a fixed-size iron bar; then pressed into a V-shape through the machine, and the other end into a word, and then pressed round empty circle, two dead ends to be welded. One ming Brush Factory http://www.ymzhishua.com