Aminzadeh won the gold by lifting 266kg in the +107kg.
His compatriot Sayadi claimed the silver with 244kg.
Jordan’s Jamil Saleh Salti Elshebli won the bronze medal with 235kg.
As the Asian Para Games returns to China for the second time following Guangzhou in 2010, nearly 3,100 athletes from 44 countries and regions are taking part across 22 sports and 564 events at the Hangzhou Asian Para Games, which runs through Oct 28.