We are proud to have passed the IS09001-2015 quality system certification, and we have established an effective quality management control system that strictly adheres to IS09001:2015 "Quality Management System-Requirements" and "Implementation Rules for Refractory Product Production License." We continuously improve our quality management system to ensure its effective implementation. Additionally, we have obtained the "Industrial Products (Refractory Materials) Production License" issued by the State Administration of Technical Supervision.