Steel shelving system Strong structure, modern design Cost-effictive ,good service 3760x560x2350mm ISO9001&ISO14001 Steel shelving systemThis ... ,charts, CD,etc to prevent damage. A precision ball bearing system allows you to easily slide drawers in and out, even ... stop at the vertical position after the closure . 2.Transmission system: Two-way overrunning clutch structure, using one-third force, three ...