采用金剛石涂層，配合先進工藝獲得更佳的涂層附著性.

先進的研磨工藝確保在超長有效徑內，保證超高同軸度， 耐高溫、耐磨損.

Using diamond coating, with advanced technology to obtain better coating adhesion;

Advanced grinding technology to ensure that the ultra-long effective diameter, to ensure ultra-high coaxiality, high temperature resistance, wear resistance.