Ma Min, Yao Hongguo and Li Na were found guilty of smuggling 2,000 methamphetamine pills and 36 kilogrammes of the drug, the Liaoning provincial higher people's court said in a statement.
Starting in May 2008, the three were involved in transporting drugs from the southern city of Shenzhen to sell it in the city of Yingkou, Liaoning.
They were arrested while collecting drugs from Yingkou Railway Station in May 2010.
As the three men were leaders of the drug gangs, they were given the death penalty, the court said.
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