revocation. According to official website of Liaoyang Market Supervision Bureau, businesses will revoke their business licenses as long as they are falsely registered, fail to start business or stop business for no reason, those who should cancel registration do not apply for cancellation, evade annual inspection and abuse their licenses. Business license is a certificate issued by the administrative department for industry and commerce to industrial and commercial enterprises and individual operators to engage in a certain production and business activities. Its format shall be uniformly stipulated by the State Administration of Market Supervision.