1, Luonaisuo-Luoyang Refractory Research Institute of Sinosteel. It is a scientific and technological enterprise affiliated to China sinosteel Company (hereinafter referred to as Sinosteel).

2. Anshan Coking Institute-Anshan Coking Refractory Design and Research Institute of China Metallurgical Group

The above two are prominent professional research institutes.

The others are all departments of colleges and universities. At present, there are many colleges and universities offering refractory materials (inorganic nonmetallic materials), and of course there are related scientific research, but the academic level is uneven, and there may not be many who have design qualifications.