According to the police's initial investigation, the fight broke out between workers from Shandong and Henan provinces.

Debris such as broken windows and destroyed cars could be seen around the plant after the clashes.

The workers said that previous incidents between fellow workers and security staff may also have led to the incident, due to simmering anger.

The company, which recently relocated its plants on coastal areas to inner provinces such as Henan province, has drawn criticism due to its harsh working conditions after a series of workers committed suicide about two years ago and several others were injured in work-related accidents.

About the broadcaster:

Lee Hannon is Chief Editor at China Daily with 15-years experience in print and broadcast journalism. Born in England, Lee has traveled extensively around the world as a journalist including four years as a senior editor in Los Angeles. He now lives in Beijing and is happy to move to China and join the China Daily team.

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