On April 11, Zhang Zhongjun, a second-level inspector of Shandong Provincial Bureau of Industry and Information Technology, and his party came to investigate the operation of industrial economy with Taiweirun Company. The person in charge of the Municipal Industry and Information Bureau and the person in charge of the city head town participated. Accompanied by Zhou Xiaofeng, chairman of Taiweirun Company.

The team visited the production workshops of Tongweirun calcium propionate, sodium propionate, sodium benzoate and benzoic acid on the spot, and listened to reports on product development, talent introduction and market prospects. Through field visits and investigations, Zhang Zhongjun fully affirmed the achievements of the company's current work, and said that the Provincial Department of Industry and Information Technology will give full play to the functions of departments and continue to help the economic development of enterprises.