Just HuaJian Medical Device(TianJin)Co.,Ltd. was established in 1958, which is the most professional manufacturer for hip and knee implants in China. JUST has developed most comprehensive hip and knee product family in China, 4 artificial hip systems—primary, complex primary, revision and customization, with more than 40 series and more than 1,000 specifications; and 3 artificial knee systems—primary, complex primary and revision, with 7 series and more than 600 specifications. JUST MEDICAL has always insisted on taking the road of professional development since it was established, and "safety, effectiveness and convenience" are the requirements of all products and services. At the same time, JUST MEDICAL covers 5 functional aspects including R&D, manufacturing, marketing, training and servicing, and abides by principles: Final trail results of design development.