National Silicon Industry (SHA:688126) posted first-half attributable net loss of 965.2 million yuan, compared with 366.5 million yuan the previous year.
Loss per share widened to 0.292 yuan from 0.133 yuan, according to a Thursday filing with the Shanghai bourse.
Operating revenue climbed 37% year over year to 2.32 billion yuan from 1.70 billion yuan.
Shares of the semiconductor silicon wafer manufacturer fell 7% in recent trade.