common thin materials, medium heavy materials, heavy materials such as knit wear, shirt, suit, leisure wear, jeans.
characteristics：
1.l ow noise, fast speed, steady and enduring especially when sewing underwear, jeans, coat's turning and ecorative parts. 2. synchronical feed of the needle bar and feed dog to avoid distraction. steady and beautiful in stitch, free adjustion available. 3. auto oiling system to ensure the lubrication when operating. 4. low noise, fast speed, steady and enduring.