Qingzhou Wang, 37, principal executive of Amarvel Biotech, a company based in Wuhan, and Yiyi Chen, 33, the firm's marketing manager, were convicted in New York in February of fentanyl precusor importation and money laundering. District judge Paul Gardephe sentenced Wang to 25 years in prison on Friday. Chen was sentenced to 15 years in prison on 22 August. These executives turned a Chinese chemical company into a pipeline of poison,