CHAODA was appointed the patent model enterprise of Wenzhou.

We have established technology research centers which specialized in researching new technology and products. It has researched more than 40 kinds of new valves for the national level important project, and also got 31 national patents. Especially, the metal seal high-temperature ball valve, special metal seal ball valve for black ash mortar and coal water slurry and high parameter anti-friction metal seal ball valves have got the authorization of national torch program.