The STYB series permanent magnet electric roller independently developed, designed and manufactured by our company has many world firsts: 1. The first national invention patent (ZL201010291564.7) 2. The first manufacturer 3. The first underground user in a coal mine 4. The first national safety standard winner 5. The first unit to convert the entire transportation system in a coal mine to permanent magnet electric rollers (Xintun Mine) 6. Currently, it has been listed as a recommended equipment in the promotion catalog of advanced and applicable technical equipment for coal mine safety production issued by the State Administration of Coal Mine Safety