Metal & Mining
| Tue 24 Mar 2026
Beijing, March 25 -- Yaohua Qinhuangdao Glass Co Ltd has sought patent for High-temperature Kiln Heating Process for Preparing Black Grey Glass. This invention was developed by Zhou Xinghe, Wang Xian, Hong Xinmin, Peng Lei, Zhang Lijing, Liu Jialei, Guo Zhen, Xu Jun, Zhang Chao, Li Chen, Ge Pan and Meng Fantao.
The patent app..