1,high intensity aluminum frame 2,stepless versatile controller 3,work 22 miles with full charged battery 4, 2 brake systems (1) 1,high intensity aluminum frame 2,stepless versatile controller 3,work 22 miles with full charged battery 4, 2 brake systems (2) the annual capacity reaches to 300000 of wheelchairs, 60000 of sickbeds and 60000 of oxygenators (3) Advanced equipments imported from ...