Safety production management is an important policy for the development of high-risk enterprises such as the construction industry and heavy industry. and safety helmets play a key role in head protection in the production environment. Therefore. it is necessary to strengthen the supervision of helmet wearing. https://nzjdaufkgng4f1.timeblog.net/70688263/identification-of-specific-ige-antibodies-and-asthma-control-interaction-and-association-using-cluster-analysis-in-a-bulgarian-asthmatic-children-cohort