The accident happened at around 10 a.m. Wednesday in a food manufacturing company in Jiangbei Village of Guixi City, according to the provincial department of emergency management. The company, which specializes in the production of barbeque food products, employs more than 90 people.
Of the patients, eight have developed symptoms such as vomiting and dizziness. The rest are still under observation in hospital.
The cause of the accident is under investigation.