Process:Rotational molding. Material: LLDPE Plastic Feature:Waterproof, Dustproof, Corrosion resistance, and Shocks absorption ... , extreme temperatures endurance, shocks absorption, all sealed waterproof, dustproof and corrosion resistance²Rotationally moulded, reinforced corner ... folding , portability ,strong impact resistance, shock absorption , waterproof , and so on. One of the luggage box is ...