The standard FIBC bag is a big bag with 4-Panel or the corner loop. This standard big bag has a top opening, a closed bottom and four lifting rings, ideal for transporting and storing various types of light and fine raw materials, waste and construction materials
Four panel bulk bags（FIBC）are sewn together along four separate fabric pieces to build the body of the bag and the top and bottom panels are sewn together. Four-grid bags are easier to maintain their shape than other types of bags and are more suitable for stacking.
A 4-panel jumbo bag composed of 4 independent fabric yarn panels interweaves around the fabric yarn to frame a square flexible container box. The fabric squares are used to construct the square bottom of the bag to complete the process of constructing the bag.