A simple zero-power self-locking switching circuit patent certificate

Patent certificate for a self-powered circuit with anti-reverse connection

A detection circuit based on a single IO port to detect the charging status of the charging chip Patent Certificate

A kind of electronic cigarette anti-dry burning control circuit and electronic cigarette patent certificate

A kind of electronic baking tobacco control device patent certificate

A kind of electric soldering iron use protection mechanism and welding device patent certificate

A kind of electrolytic polarity switching control circuit patent certificate

Certificate of Patent for Graphical User Interface for Electronic Devices

Electronic Cigarette APP (Android Version) V1.0 Software Authorship Certificate