Consumer Electronics
| Sun 01 Nov 2026
Beijing, Oct. 31 -- Tianjin Water Planning Survey Design has obtained a patent for graded drop water heater for surface flow wetland. This invention was developed by Yuan Pengfei, Dong Guanyu, Yang Yang, Sun Jiming, Liu Jijun, Ning Jingang, Wang Xuehuan, Ta Yaoyu, Zhang Meng, Li Xiaomei and Guo Zhao.
The patent application nu..