By Patrick Raleigh UT On-line news editorLeverkusen, Germany-Bayer MaterialScience AG has added Prague-based Tanex Plasty to its systems house network, under an agreement covering the supply of Bayer raw materials and technical support to the Czech firm. Tanex Plasty manufactures systems for the production of polyurethane foams, at facilities in Jaromer on the river Elbe, close to the Polish border with Germany.The agreement builds on a long-running relationship between the firms, which includes cooperation on the development and production of rigid foam systems, Bayer said 22 March. "