GI Plastek is a leading supplier of injection and reaction-injection molded plastic parts to a variety of industries including agricultural equipment, medical, automotive and office equipment. The company has five divisions in the United States, including its RIM Division, which manufactures specialty plastic products to the agricultural, construction, specialty transportation, heavy truck and recreation equipment markets. The RIM division maintains plants in Newburyport, Mass., and Dewitt, Iowa. In 2002, GI Plastek moved its corporate headquarters to Newburyport from Ohio. Its Wolfeboro, N.H., plant is responsible for producing structural foam.