1.Full UBS body, good outlook for equipment; 2.Ball bearing inside, durable and silent moving; 3.Double brake, steady & save. 1.Full UBS body, good outlook for equipment: Enhance hardness UBS can have strong support for hospital used equipment. White color is more bright and match the enviroment. What's more, color can change up to your design;2.Ball bearing inside, durable and silent moving;3. ...