Denefu tire repair technology has obtained the national invention patent repair technology. From declaration, preliminary examination, defense to final judgment, it has gone through various links. Successfully obtained the patent certificate. Moreover, this technology has been applied for ten years and has repaired countless hard tires for car owners across the country. To learn technology, you must choose a company that has been applying this technology. Teaching the most professional and comprehensive repair technology for hard injuries is the so-called, well informed. Denev signed a contract to teach, taught each student by hand, and awarded him an exclusive invention patent authorization bronze medal after completion, which improved the students' popularity and credibility. Recommend Denev! Professional and efficient ~