On June 14, local time, according to local American media reports, an explosion occurred at a chemical plant in Rockton, Illinois, and smoke billowed from the site.
As the accident may lead to the leakage of dangerous chemical substances, the local police have asked residents around the incident to evacuate.
It is reported that the chemical plant is a subsidiary of Chemtool Incorporated, a well-known chemical company in the United States and the world's largest lubricant manufacturer.
(CCTV reporter Xu Tao)