... :360 DC-I Dental Unit Chair Dental unit chair, dentist's stool, pneumatic sring height control, offering seatand backrest rotation ... :360 DC-II Dental Unit Chair Dental unit chair, dentist's stool, pneumatic sring height control, offering seatand backrest rotation ... angle:360DC-III Dental Unit Chair Dental unit chair, dentist's stool, pneumatic sring height control, offering seatand backrest rotation ...