Head selection Rigid stand structure, double beam stand for the model above 12heads, advanced vibration-preventive pad and improved auto-lubricating system make the embroidery more reliable, stable and less trouble when high speed working, meantime enhance the life span of the machine; Machine frame driving in x-axis with traverse system for the model above 8heads, y-axis in linear guide rail driving, plus imported ac servo motor for frame driving New development on the frame driving: x and y axis adopting homo-cogwheel and rack and belt system plus the imported ac servo motor for frame driving, which revolutionarily changed the frame driving system Max speed:2-10heads: 1200rpm; 12-15heads: 1100rpm; 16-20heads: 1000rpm New type individual tension base with threading tubes, which can reduce the friction with the thread during high speed running.