How Technology Works on Instagram: "This is the extrusion blow molding process in action—a key technique used to produce high-strength plastic pallets. It begins with the extrusion of a molten plastic tube, known as a parison, which is fed vertically into an open mold. Once the parison is in position, the mold clamps shut, and compressed air is blown into the center of the tube. This inflates the plastic outward, forcing it to conform perfectly to the mold’s interior shape."