Explanation of Plastic Woven Bag Terminology: Woven bags are primarily made of polypropylene (PP), which is extruded and stretched into flat filaments, then woven, braided, and processed into bags.

"Lay the bag flat, and mark two 100mm x 100mm squares at the top and bottom two diagonals of the bag. The outer edge of the square should be 100mm from the edge of the bag. Visually count the warp and weft threads of the squares, and take the average value. When counting, if the last thread is less than one thread, count it as one thread." The national standard specifies both the weaving density and the density tolerance. The weaving density mainly depends on the packaging product and is determined by the user.