... ,O2 / N2O / CO2 Manifolds system (plant), 5,Compressed Air System, 6,Vacuum System, 7,Medical Gas Outlets Boxes, 8,Bed Head Units, 9,Ceiling ... Material Inspection & Quality Controlling;4,ISO9001, ISO13485(SGS) Quality Management System;5,More than 6 years producing and engineering experience;6 ... tell you the Tracking NO to follow up after shipping.8. Nice products arrive at your side.^_^ any question ...