EPS board is a thermoplastic material No. 4 fresh foam boxes sold per cubic meter volume contains 300-600 million independent sealed bubble, the volume of air containing more than 98 percent for No. 4 fresh foam box wholesale, due to the thermal conductivity of air small, and because they were closed in the foam and not convection, so the EPS is a very good thermal insulation performance materials. Polystyrene insulation boards made of polystyrene as the main raw material, and polystyrene was originally an excellent low thermal conductivity material, supplemented extruded out of the 4th fresh foam boxes manufacturers _ _ Plastic Foam Zhucheng Hua Yong Zibo preservation 4 foam boxes provided by Zhucheng Yong Hua Plastic Foam Factory. Zhucheng Yong Hua Plastic Foam Factory (www.zchyps.com) Shandong Weifang, a leader in industrial products, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Plastic Foam in Zhucheng Hua Yong leadership with the staff warmly welcome all inquiries negotiations to create the cities of Hua Yong foam plastic a better future.