Graphic Systems, Inc.

Chelsea Building Products offers a range of vinyl window and door extrusions, polyvinyl compounds and composite materials. Headquartered in Oakmont, Pa., the company s facility occupies an area of more than 500,000 square feet. It employs more than 200 people who design, develop and extrude various window and door systems. The company s products are installed in several homes and office buildings around the world. Chelsea Building Products also offers design and maintenance services. Its products are approved by the American Architectural Manufacturers Association. Chelsea Building Products is a subsidiary of Tessenderlo Group, an international chemicals group, which employs more than 8,000 people and operates in over 20 countries worldwide.