It is an new environment friendly heat insulation,which is soft,light and esay to install.It is made from aluminium foil polyethylene through special machinery.It has no odor and toxicity;it not only overcomes the discomfort and environmental damage brought by glass fiber and epispastic meterials,but can also resist ultraviolet radiation that can penetrate through sheet iron,concrete,wood and other common heat insulation materials.This new heat insulation material not only has good insulation ,heat-reflection &insulation and anti-radiation functions,but also has good moisture-barrier,heat-preservation and energy-saving functions in housing construction(roof,wall,and floor).Besides,This product can add a layer of PE woven cloth on the basis of the original aluminium foil and polyethylene,which greatly enhances tensile strength and tearing resistance strength without changing its original characteristics.