On the morning of February 19, 2016, Li Ya, vice governor of Henan Province and Secretary of Luoyang Municipal Party committee, song Yilin, Secretary of Yanshi municipal Party committee, and Li Min, mayor of Yanshi, and his party went to Dayang for investigation and research activities.

  Firstly, song Yilin, Secretary of Yanshi municipal Party committee, made a detailed introduction to Secretary Li on the development plan of Yanshi industrial agglomeration area. During the investigation, Li Ya, Secretary of Luoyang Municipal Party committee, and his party went deep into the production workshop of DAYANG to understand the production process and product quality inspection, and spoke highly of the development ofDAYANG in recent years. Zhang Jianwei, chairman of DAYANG, accompanied the whole process and made a detailed report on the company's products. After investigation and research, Secretary Li standardized and guided the deficiencies in the management of DAYANG company. At the same time, he also greatly affirmed the continuous efforts made by DAYANG company in building a standardized management system.