Despite tight restrictions on religion in China, the country's largest bible factory prints more than six million religious books a year.

There are more than 600 staff and the factory is about to move to a new site on a Nanjing industrial park.

It's a move forward for the country where religion was heavily supressed under Chairman Mao's rule.

Bibles were effectively banned by the authorities until the late seventies.

But religion is now encouraged as a positive role in Chinese society.

However, the Bible can still only be sold in official churches and not ordinary bookshops.

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