The US Attorney's Office yesterday announced the arrests of 67-year-old Hsien Tai Tsai and his son, 36-year-old Yueh-Hsun Tsai.
The machinery includes ones that drill precise holes in metal.
Prosecutors say the US placed a 2009 ban on the father from doing any business in the US as suspicions around him grew. But the complaint says he continued trying to export machines from the US with his son's help.
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