Engineering
| Mon 29 May 2023
Beijing, May 30 -- Xing Ragang has applied for Chinese patent for butterfly valve. Jin Shigui, Wang Yiming and Xing Ragang developed it.
The patent application number is CN202210691015 20220618. The patent publication number is CN115076385 (A). International Patent Classification codes are F16K1/22, F16K1/32, F16K1/36, F16K1/..