Dec 16, 2010. /Lesprom Network/. Ahlstrom Corporation sells its Groesbeck filtration business located in Groesbeck and Mexia Texas, USA, to Polyester Fibers, a portfolio company of private investment firm Empire Investment Holdings. The value of the transaction is approximately Euro 4.5 million. This amount may increase by up to Euro 1.5 million if certain conditions and targets are met in the future. Ahlstrom will book a non-recurring loss of approximately Euro 18 million related to the divestment in its 4Q financial results, as the company said in a press release received by Lesprom Network. The Groesbeck operation, which employs about 100 people, makes air filtration media for the heating, ventilating and air conditioning (HVAC) industry. The unit has been part of Ahlstrom's Filtration Business Area's Dust Filtration unit. Ahlstrom has concluded that dust filtration materials do not fit strategically to its product portfolio. The transaction will be effective immediately. This divestment together with earlier announced Wuxi and Bethune divestments complete Ahlstrom's exit from dust filtration businesses. Ahlstrom is a global leader in the development, manufacture and marketing of high performance nonwovens and specialty papers.