Cooper Corporation Pvt . Ltd. Manufactures Valve Seat Inserts. Cooper Corporation Pvt. Ltd is accredited with an ISO 9001:2000 Certification. The company also manufactures Engines in technical tie-up with Ricardo, UK, Automobiles, Cylinder heads and Cylinder blocks, Crankshafts and Flywheels and Pulleys. The Valve Seat Inserts are installed directly into the cylinder head.