DYNA-MAC Holdings' independent auditor has raised doubts on the group's ability to generate sufficient operating cash flows and continue as a going concern.

THE following companies saw new developments that may affect trading of their securities on Wednesday:

MAINBOARD-LISTED Dyna-Mac Holdings has appointed Lim Ah Cheng as its new chief executive and director, effective March 1.

OFFSHORE oil and gas contractor Dyna-Mac Holdings has secured an in-principle award of fabrication contracts totalling approximately S$18 million, it said on Tuesday.

SHARES in Thomson Medical Group and offshore oil and gas contractor Dyna-Mac separately surged on Friday afternoon, on the back of heavy trading volumes. 

THE following companies saw new developments that may affect trading of their shares on Friday.

OFFSHORE oil and gas contractor Dyna-Mac Holdings saw its shares jump for the second time this week after they rose as much as S$0.016 or 11.2 per cent to S$0.157 on Thursday.

SHARES of offshore oil and gas contractor Dyna-Mac Holdings jumped as much as 11 Singapore cents or 8.3 per cent to S$0.143 amid active trading on Tuesday morning.

<p/> DYNA-MAC Holdings, which fabricates topside modules for the oil and gas industry, has posted a net profit of S$142,000 in the third quarter, down 18.4 per cent from the same period a year earlier. 

<p>SHARES of offshore oil and gas contractor Dyna-Mac Holdings surged on Thursday morning, prompting a query from the Singapore Exchange (SGX).</p>