Forming fabric is divided into: 1-layer, 2.5-layers and 3-layers forming fabric.According to the weaving method, 1-layer forming fabric is divided into 4-held, 5-held, 16-held and 24-held. 1-layer fabric is mainly used to produce cultural paper, wrapping paper, kraft paper, corrugated paper, etc. It has the characteristics of good molding and long service life.