Dongyue Group (189.HK) climbed 8% in Hong Kong trading to HK$13.30, touching an intraday high of HK$13.37 with HK$307 million in turnover.

The rally followed the company's first-half results released late Thursday. Net profit rose 32% to RMB 1.03 billion, while revenue gained 8% to RMB 8.06 billion. Gross margin widened by roughly 8 percentage points to 37.2%, supported by a cyclical recovery in fluorochemicals and cost efficiencies.

Profit from the refrigerant segment jumped 21%, and the organosilicon business doubled its earnings. Dongyue also completed a new-energy facility adding 49,000 tonnes of annual R32 capacity. The company declared no interim dividend.

A broader rally in Hong Kong-listed chemical and materials names provided additional tailwind for the stock.