Profile: Newen Inc specializes in valve seat machining. Our Fixed-Turning® is the machining of valve seats and/or any revolution shape by interpolation of axes. Fixed-Turning® also is a unique and amazingly simple kinematics. It is a pinion-free and play-free mechanism. It is entirely pre-loaded, with the ability to machine the most complex shapes, including straight lines, radii, concave or convex, in both directions, while guaranteeing extraordinary geometric qualities.