1)UL,CE,CCC 2)High efficiency, easy to adjust speed,low price 3)Widely used 1) widely used in various industries, such as wire, cable, light industry, textile, papermaking, chemical industry, printing and dyeing, metallurgy, rubber, fibre drawing, extrusion machinery, medical machinery, food processing, printing and packing.2)Outfitted with speed governor, it can achieve stepless adjustment of ...