In the commercial housing sales contract, what is the behavior of the real estate company to forge the customer's signature, and should it bear legal responsibility? If so, what responsibility should it bear? Of course it's illegal. Be responsible for not supporting the law. According to the consequences of his forged signature. This must not be considered. Whatever it is, it is illegal to forge someone else's signature. If you need to make corresponding compensation for your economic losses, he will also be punished accordingly. Those who are heavily responsible shall bear criminal responsibility.