Hong Kong-listed Panva Gas Holdings Limited has reported a 688% rise in third quarter profits to HK$75.1 million from year-ago levels with revenues virtually unchanged at HK$761.26 million. (US$1=HK7.87). Gross profit was up by 192% to HK$157.4 million. Panva’s managing director Chen Wei said the company has achieved promising results in recent months as a…