Which company does the Chinese Patent Office grant patent rights to and why? After the patent is granted, if the other two companies continue to produce "energy-saving equipment", will it constitute

The Patent Office will grant the patent to Shanghai Trade Development Company, and Beijing Quanta’s patent will also be authorized. Because utility models do not undergo substantive examination. If an Italian company files a patent application, it will also be granted. As for the infringement issue, if they are all valid patents. The earliest applicant can file an infringement claim against the other two companies. The problem is that it is now 2011 and utility model patents are valid for 10 years. Whether to pay annual fees. None of this is stated. If the annual fee is not paid, the rights are lost, and there is no infringement.