Model SF8900D is equipped with automatic thread trimmer ,automatic needle posioner, automatic stitch amount setter, automatic thread wipe and many other sewing models. It is applied to sewing shirts, uniforms and sportswears, and also applied to sewing portpolios, purses, shoes, jeans and other medium-heavy weight materials; esp. suitable for sewing trade marks, pockets, sleeve-cuffs,etc. It can be operated with high quality and high efficiency.