What is the standard and right of double application for patent (application for invention and utility model on the same day)?

Double application means that an enterprise has developed a patent (the patent is open for protection) and wants to put it into the market quickly. When applying for a patent, you can choose to apply for both an invention patent and a utility model patent. The utility model patent has no actual examination stage, and the cycle is relatively short, and it can be obtained in about 9 months. Once authorized, it will be protected; Applications for invention patents are also in progress at the same time. If the invention patent can be authorized, then the utility model can be abandoned. If the invention patent is not authorized, it shall continue to be protected by the utility model.