Nantong Jianghai Capacitor (SHE:002484) posted first-half attributable net profit of 383.3 million yuan, up 6.9% from 358.5 million yuan the previous year.
Earnings per share rose to 0.4552 yuan from 0.4247 yuan, according to a Friday filing with the Shenzhen bourse.
Operating revenue rose 17% year over year to 3.15 billion yuan from 2.69 billion yuan.
Shares of the aluminum electrolytic capacitor manufacturer jumped 7% in recent trade.