1. Bale 2. But if it is a profile-shaped steel lattice plate in order to stabilize the recommended screw lock, the use of 4 screws passed through the aperture of the steel lattice plate for fixing, relatively stable and not easy to slide, but the consumption is more time and materials. 3. Pallet guarantee, most of the containers used for export, can package the steel grid stability, transportation is also relatively safe.