nguồn:[1] Lợi nhuận Powell Industries vượt 0.44 USD, doanh thu không đạt... (https://ng.investing.com/news/earnings/powell ...)[2] Lợi nhuận Powell Industries vượt 0.50 USD, doanh thu vượt... (https://www.investing.com/news/earnings/powel ...)[3] Powell Industries (POWL) Vượt EPS Q4 50c, Vượt... (https://www.streetinsider.com/Earnings/Powell ...)