or such high friction surface covers pulleys and makes high-friction pulleys which prevents slipping of belts.
This high friction surface treatment is available for parts of various shapes.
For more info such as surface roughness, hardness, friction efficiency, please contact Dymco overseas division at email@example.com
Steel belt video: http://www.steelbelt.jp/060video/video.php
Contact by email: URL http://www.steelbelt.jp