This undated picture shows the devices the police confiscated from the 3 suspects who are arrested on wiretapping and illegal photographing charges.
Three suspects have been arrested in Ganzhou, Jiangxi province on charges of wiretapping and taking illegal photographs.
Police acted on a tip-off from one of the factories in the city and arrested employees Su Heng, Li Zhao, and Hua Haifeng at the end of last month.
The suspects confessed that they breached the factory's commercial confidentiality by stealing and selling its information to overseas organizations.
They also said they have committed such crimes several times at different places across China since 2010.
The police have confiscated the devices used for wiretapping and photographing that include watches, flash drives and computers.