... ; ASTM F136; 2.Tolerance: h6, h7, h8, h9 3.High quality 1. The Metallographic rating of TC4, TC4ELI, Gr5, Gr5ELI is ... available for bearing high intensity exercise in Spine. It is used in clinical many times, shows good effects without lost-head nail.3 ... . The Biocompatibility is very good, excellent anti-Fatigue ...