Share of losses of an associate fell 52.5% to HK$0.9 million, from losses of HK$1.8 million a year ago.
As at end March, cash and cash equivalents stood at HK$1.73 billion.
Looking ahead, the group says its PVB business continues to be affected by low economic growth rate in China.
It adds that it will continue to improve the production efficiency, reduce the defect rate, lower the production costs, and shorten the lead time to enable it to deliver greater returns to shareholders.
Shares of Kingboard Copper Foil closed half a cent higher at 41.5 cents on Wednesday.