Changyi News, January 22, 2018

Recently Changyi obtained three patents issued by the State Intellectual Property Office: Patents for Diaphragm Control Valve, Electric Split Axial Flow Regulating Valve, Production Method of Erosion and Corrosion Resistant High pressure Throttle Valve and Combined Valve Core.


At present, Changyi has obtained total 50 national patents, of which 7 are invention patents and 43 utility model patents.

This is an effective practice of advocating technological innovation. In the process of technology research and development, Changyi has established a complete technological innovation system and formed a research and development team with its own characteristics, as well as persisted in the road of technological innovation, continually strengthens the building of innovation capacity, and constantly improved core competence of enterprise.

Invention Patent for Diaphragm Control Valve

Invention Patent for Electric Split Axial Flow Regulating Valve

Invention Patent for Production Method of Erosion and Corrosion Resistant High pressure Throttle Valve and Combined Valve Core