Detailed DescriptionCervical collar can reposition cervical disk extrusion. The X-ray comparison before and after using this product shows that every spatium cervical can widen 2.5-5mm(that means that the Neck Collar can increase 2-5mm). The widened spatium cervicale increases the negative pressure in the cervical disk. The extruded vertebral pulp can be partly or completely be repositioned by the negative pressure and reduce the impulse on nerve root and improve the clinical symptom. More Product Features Standard: CE, ISO9001, ISO13485 Productivity: 100, 000/month Unit Price/Payment: USD5/pc Company: Guangzhou Succeed Medical Equipment Co.,Ltd.