On the afternoon of September 5, Yang Changjun, deputy director of Shandong Yellow River Delta Sustainable Development Research Institute, and his party of more than 30 leaders in enterprises visited our company for investigation and exchange. Zheng xingbiao, deputy general manager of the company, accompanied the visiting leaders to visit the all steel radial tire production workshop. After the site visit, the leaders of the enterprises directly under the municipal government held a symposium in the conference room on the second floor of the company.