The production of foam sculpture is inseparable from polyurea protective coating. Polyurea coating is directly sprayed on the surface of foam sculpture or shaped by polyurea spraying machine, which has the advantages of good prototype reproducibility, light weight and convenient handling, and will not crack or delaminate after being impacted by external force. (This question is answered by Ya Bu Machinery-high-end polyurea spraying machinery and equipment and PU supplier of polyurea software. )