The shares price of Nuplex Industries Ltd tumbled on Friday after the resins and chemicals maker issued a profit warning.
Nuplex halved its earnings outlook for 2012, saying earnings will to be flat to 5% higher.
The net profit is expected to be 26% lower for the first six months when the cost of acquiring a company called Viverso are included.
The company attributed the lower profit forecast to the uncertain economic outlook.
Nuplex shares fell more 9% to $2.21.