Jan 22, 2007. /Lesprom Network/. Austria's Duropack is seeking to buy back from minority shareholders 315 423 shares in Duropack Trakia Papir, the Pazardjik-based producer of paper and corrugated board, Dnevnik BFNS said. Duropack, which already owns 90.25% of Trakia Papir, has pitched a price of BGN 64.68 ($42.9) per share. If the offer is accepted, Duropack intends to delist Trakia Papir from the local stock exchange. The paper mill quadrupled its net profit to BGN 7.5 million ($5.0 million) by end of September 2006.