The fire broke out at the Lanhua Chemical Factory in Xiliuhe Town, Tien Dao District, Hubei Province at around 5:30 p.m. on August 3 and was extinguished at 7:00 p.m. the same day.
Three victims are being treated, while several others have been discharged from the hospital with non-life-threatening injuries, China Daily reported on August 4.
More than 100 rescue workers and 14 fire trucks were dispatched to the scene.
All of the company's production activities have been suspended. The authorities are investigating the incident.
Industrial accidents are common in China, where safety regulations are considered poorly implemented.
In March last year, an explosion at a chemical plant in eastern Jiangsu Province killed 78 people and injured hundreds.
Four months later, a massive explosion killed 15 people at a gas plant in central China.
In November 2018, a truck carrying explosives right at the entrance of a chemical plant in Zhangjiang City, northern China, killed 23 people and injured 22 others.
