This model is the ancient force GL-0303S-D3 upgrade products. The model uses a connecting rod feeding structure, good durabillity, feeding balance, the bulk of the type of slag and submersible large seam in the sewing process, in the sewing process can make the upper and lower layers of feed to achieve the same. The use of bilt-in integrated computer control technology, stable performance, anti-interference abillity. Using a large rotary hook, to reduce the number of bottom line, improve work efficiency: the use of automatic lubrication device to improve the service lifle of the machine. With a volce broadcast, USB jack, a new double-action knife cut line structure, sealed bottom shell oll pan, automatic needle position, automatic pin number, automatic count down stitch, electronic clip, automatic lfting feet and other intelligent Sewing mode. Aplicable to sewing thick materlal, luggage, leather, leather products, sofas.