... 4. thread winding machine DM-2A automatic bobbin winder feature :1.DM-2A automatic bobbin winder is specially designed to ... of yarn, such as 40/2, 60/2, 75/2,70/2,80/2 of polyester yarn,cotton ... , high stretch yarn and mercerized yarn.Automatic bobbin winder advantage :1.Automatic bobbin delivery system.2.Automatic ... , easy-operation, nice pattern of bobbins. Bobbin winder machine DM-2A automatic bobbin ...