Advertising Bag Welding Advertising Bag Welding - Ultrasonic Seam Machine - Cheersonic Non-woven polypropylene is the material that we used often on promotional grocery tote bags. They are flat, porous sheets that are made directly from separate fibers. They are not made by weaving or knitting and do not require converting the fibers to yarn. The fabric is usually pressed together thermally, chemically or mechanically. Ultrasonic advertising bag welding means [...]

Waterproof Nylon Cloth Welding Waterproof Nylon Cloth Welding - Ultrasonic Seam Machine - Cheersonic The outdoor cover of the air conditioner is made of waterproof nylon cloth or raincoat cloth.Waterproof nylon cloth is made of chemical fiber material through a series of processes. It belongs to polyester material, and has very good firmness. It is not easy to break during use, and has good breathability, and can bring good waterproof [...]