Advanced Dental Chair Supplies: 1.Safety function 2.Movable cuspidor box 3.LCD display 4.Unique design Features 1,Safety function:Patient's chair and backrest will be locked when using the handpiece,avoiding accident.2,Movable cuspidor box.3,Three rotation axis,adjustinig lighting to each angle of oral, the handle can be removed for clean and sterilization. durable,high brightness,energy-saving.4 ...