Curtains stitching model refers to the way in which curtains are constructed and the stitches used to join the fabric pieces together. It is important to choose the right type of stitching model in order to ensure that the curtains are durable and secure. Common types of curtain stitching models include pleated, grommet, tab top, rod pocket, and loop top. Each of these models has its own benefits and drawbacks, and the choice of which one to use should be based on the particular style of curtains and the desired look.