... new type Spinning Frame developed on the basis of optimum design theory, into which advanced tech HY128 Ring Spinning Frame is a new ... type Spinning Frame developed on the basis of optimum design theory, into ... ,492,480,456,444,420,408,396,384,372,360Dia. of ring (mm)38, 42, 45Bobbin length (mm)205, 230Spinnable fiber length ...