In a statement to the Hong Kong stock exchange, the company said revenue from sales to its Beijing-based parent, Hanergy Holding, may plunge 90% on the year to roughly HK$200m ($25.8m).
HTF has traditionally sold a significant amount of solar-panel production equipment to its parent, which in turn sells PV modules back to HTF.
It did not say how much of a loss it expects to post in the six months to 30 June, 2015.
