YSD Arc Lines Polishing Machine 1.Perfect structure; 2.Low cost, high efficiency; 3.Convenient repair and maintenance. Usage and functionsYSD- ... has the advantages of high efficiency, quick, good quality, and low cost. Are lines polishing machine can be used to produce stair ... groove, and etc. More features such as shaped lines, the French side, waist side, duckbill side, and the Rome edge features ...