Dental x-ray, x-ray machine ,dental x-ray machine 70KV for dental unit dental chair, best quality with cheap price dental X-rayCapacity 1The time ... function can extend the life of the machine.4Convenient panel design makes operators use freely.5Irradiating dosage is 10% ... times less than national compulsory stipulated medical X-ray protection standard,and no X-ray in theory,so the doctors can prevent ...