KEYTONE High speed Flatlock/Interlock Sewing Machine is direct drive flat bed interlock sewing machine with auto trimmer, be suitable for big area fabric sewing , sew decoration stitches on both surface of fabric, and sew many kinds of decoration. adopt to small size servo motor istead of traditional strap, can start to work or stop quickly, shorten transmission route, upgrade the precision. eith automatic trimmer, automatic adjusting speed, automatic stopping needle and other automatic functions, can upgrade the production efficiency, reduce any malfunction to minimum during sewing in order to sew top quality stitches.