Exterior structure of the air box: wooden cases are nailed with fire-proof plates or aluminum plates attached to the rigid multi-layer plywood, each side of the wooden cases is made of aluminum alloy profiles with certain thickness and strength, and each corner of the box is connected and fixed with the aluminum alloy edges and plywood with high-strength metal spherical wrap angles.
 
Internal structure of air box: the box body can be fitted with clapboards according to the product characteristics, and the inside of the box body and the clapboards are pasted with shockproof materials
 
Anti - shock materials in the box: adopt anti-shock EVA, pearl cotton, sponge and other materials, which can effectively protect the appearance of the product and the main functions of the product from being damaged.
 
Hardware Accessories Material: The hardware is made of beautiful butterfly lock, invisible handle, back buckle, corner guard, corner wrap, wheel vortex and universal wheel.