Friends of Qingyuan, what is the difference between tbi ball screw and other brands?

TBI screws are quite cheap, and the number of processing equipment is also different. In addition, the reflux cover on the internal circulation nut of TBI screw is plastic, while other brands are generally metal. TBI is rarely used in high-precision machine tool industry, and occupies a high share in some industrial machinery with low requirements. It is said that TBI has now introduced German lead screws, and the price is also very cheap. I don't know if it's true or not.