MARKS YOU CAN BUILD ON An independent, employee-owned third-party certification and testing agency with two divisions. BUILDI ... NG PRODUCTS works to certify manufacturers of structural and non-structural engineered wood products (like plywood, OSB, LVL, MDF, particleboard, rimboard) and structural adhesives; MANUFACTURED STRUCTURES does design and inspection of manufactured structures in more than 40 states. Based in Wisconsin, with laboratories in Wisconsin and Oregon, and clients in more than a dozen countries. PFS and TECO TESTED certification marks are MARKS YOU CAN BUILD ON! read more