Illegal. The People's Procuratorate of People's Republic of China (PRC) inquired about People's Republic of China (PRC) and official website, and found that the stitching signature was forged evidence, and the legal responsibility of the corresponding responsible person of the company could be investigated, ranging from fines to detention. Violation of the law is the behavior of individual citizens or social organizations that violate the law and endanger society. It shows that the actor fails to fulfill the obligation of abiding by the law, which goes beyond the limit of legally exercising his rights and causes damage and infringement to the legitimate rights and interests of other subjects.