Maple Valley Plastics, Brown City, Brown City Mi, Injection Molding, Plastics, Plastics Injection Molding; Custom Injection Molding: Insert, Two-Shot, Automotive Interior, Medical, Sporting Goods; Maple Valley Plastics MVP has flourished in the very competitive Plastic Injection molding industry. Put MVP to work for you!; Custom injection molding: insert, two-shot, automotive interior, medical, sporting goods ...