(1) Module 1 ~ 10, which can be accessed by the end of a long design, can be connected / swap, unlimited extension of trip;

　　(2) The accuracy of the cumulative error of level grinding 0.022mm/300mm;

　　(3) Has the straight-tooth / teeth oblique type, adapted to various conditions of use;

　　(4) With heat-treatment type / non-heat type, the same module can have a variety of strength;

　　(5) With a square / round appearance, easy to integrate the use of;

　　(6)A variety of materials: steel, stainless steel, engineering plastics (POM).