main raw materials: modified corn starch, foaming agent,white ... Well Compatibility Biodegrade fastPurpose:gypsum board foam(building materials,chemicals,plastics,and other industries).Packaging:125kg/200kg ... the gypsum board toughnessApplicationUsing the corn starch as raw material, the product is made with multi-chemicals ... value:4---9Bond strength: ≥90kg/cm2 raw materials of gypsum boards