In 2021, new crown disease struck again, this time with great impact on the people of Hebei Province. In order to eliminate and reduce the possibility of the disease spreading in the company and even more widely, 2021, dINOS organized all the staff to carry out nucleic acid test in the plant area. During the test, all of them wore masks, queued up voluntarily and kept a safe distance. In this war without gunsmoke, everyone is a soldier, everyone in the "war" to do a seemingly small but irreplaceable contribution!