1, cast navigation is a high-tech enterprise specializing in the research, development, manufacturing and sales of automotive electronic products such as car navigation and entertainment system, intelligent information system, anti-theft and security system.

2. Ruizhicheng Navigation is a company specializing in the research, development, production and sales of intelligent navigation and intelligent driving assistance systems for automobiles. Its products include car navigation system, intelligent driving assistance system and so on. Ruizhicheng Navigation focuses on technological innovation and product quality, and is committed to providing users with a smarter, more efficient and safer driving experience.