The present invention relates to a composite sandwich wall panel
comprising: at least two fine sand gypsum or concrete panels (I) in each
of which a glass fiber web (2) is disposed at center, and at least one
polystyrene panel (3), which are bonded alternatively. The surface layer
and the bottom layer are the fine sand gypsum or concrete panels, and
according to the requirement, the wall panel can be produced to have
three or more layers of composite panels. The wall panel of the present
invention has advantages of light weight, easy installation, strong
loading capacity, no seam crack, no plaster, and good performance of
thermal insulation, sound insulation and fireproof as well as it is
suitable for internal wall and external wall.