The so-called foam box is mainly refers to the EPS material through the mold through the hot processing molding, made of packaging products commonly known as “bubble”. Expandable polystyrene is an ideal packaging material. Through forming process, it can be processed into various shapes and different thicknesses of packaging products. In the case of high load, the material can achieve the function of buffering and damping through deformation, energy absorption, decomposition energy, etc., and has the function of heat preservation and insulation. The foam box is generally white, and can produce color according to requirements.