Stone Plastics and Manufacturing, Inc. is a custom injection molder and assembler of plastics parts for the automotive, building and consumer industries. The company started in 1999 with one customer and one machine. We have since grown to include over 60 molding machines and a new 165,000 ft2 facility in Zeeland, Michigan. We attribute our growth to developing partnerships with our customers by providing innovative ideas that solve problems and reduce costs.