Composite solid lightweight partition wallboard is a new type of high-grade lightweight wallboard material compounded with polystyrene granular mortar as the core material, calcium silicate board as the surface material, properly mixed with fly ash, slag and admixtures, which is produced by Luoyang Green Label Wallboard Factory with the introduction of foreign advanced technology, adopting the grouting method of the production process, computerized load-bearing distribution and control, mixing, grouting, and produced by the pressurized treatment. Solid wall panels are 100% asbestos-free, stable physical properties, not subject to rain erosion, also known as solid composite wall panels. It is quite economical to use.