TDG Holding (SHA:600330) swung to a net loss attributable to shareholders of 282.3 million yuan in the first half from the year-ago attributable profit of 52.6 million yuan, according to a Shanghai bourse filing on Wednesday.
Loss per share was 0.229 yuan compared to earnings per share of 0.043 yuan a year earlier.
Operating revenue climbed 11% to 1.75 billion yuan from 1.58 billion yuan in the prior year.
The Chinese electronic materials manufacturer's shares closed 3% lower.