 On September 28th, 2022, Feng Wenge, Secretary of CPC Municipal Committee, accompanied Li Peixing, vice governor of CPC Provincial Government, to HL company for investigation |  On April 22nd, 2022, Guo Chenglu, vice chairman of provincial CPPCC, and his delegation visited |
 On November 14th, 2021, Zhang Yongxia, Secretary of the CPC Municipal Committee, and her delegation visited HL company to investigate the epidemic prevention and the resumption of work and production |  Zhang Yongxia, secretary of the Municipal Party Committee, and Liu Ning, president of China Industrial Design Association, visited the company for research |
 Zhang Yongxia, secretary of Tianshui Municipal Party Committee, came to HL company for investigation |  Vice governor of Gansu province Zhang Jingang and his entourage came to HL company for investigation |