orthotics prosthetics orthotic knee joint material:SS304,17-4PH OEM,CNC machining,assemble,service are available orthotics prosthetics orthotic knee joint1.Quality standard: ISO9001:20002.Technique: silica sol technique3.Material ... : 15Cr3, 15CrNi6, 16MnCr5, 42CrMo4, 35CrMo, 40Cr etcsizeAccording to customers' requirementdesignpacking orthotics prosthetics orthotic knee joint