Three men who made more than 12 million yuan (.8 million) by selling unlicensed set-top boxes to receive overseas TV signals have been jailed by the Minhang District People's Court.
Under Chinese law, use of overseas satellite signals must be licensed to allow censoring of content.
They were jailed between five years and six-years-and-nine-months and each was fined more than 200,000 yuan.
Two of the men, surnamed Wu and Wan, from Fujian Province, were coworkers. They started to sell set-top boxes in March, 2013. Wu provided funds, while Wan offered technical support.
The two found a factory to make the boxes and sold both online and offline. Before they were caught in January, 2016, they had made more than 8.6 million yuan, the court said.
The third man, Wang, from Wu's home town, joined the lucrative business in March, 2014.
He bought boxes from Wu and sold them on his store on popular online marketplace Taobao. He made about 3.5 million yuan and was caught in December, 2015.