What are the listed companies for the timely purification process of high purity?

Timely shares, new materials of Chinese enterprises. High-purity aging refers to the aging of silica with extremely high purity and extremely low content of impurity elements and its products. The purification technologies of high-purity timely listed companies include timely and new materials from Chinese enterprises. High-purity timely is widely used in semiconductor, photovoltaic, optical fiber, precision optics, advanced lighting equipment, new glass and other industries.