China Yuchai International just delivered a far stronger profit story than today’s share price suggests. The stock slipped about 3% after the half year release, even as revenue reached roughly RMB14.7b and net profit attributable to shareholders came in at RMB560.6m. The real headline is margins: gross profit grew much faster than sales, lifting gross margin to 17.1% and pushing operating profit toward RMB1b. For a diesel engine manufacturer long viewed as a low margin workhorse, this report puts profitability at the center of the thesis and sets up a very different debate on the stock.

Is China Yuchai International trading at a genuine discount, or does this lower P/E simply reflect its slower revenue outlook? Compare the current…