Quest Industries Lapeer MI - EDM, Plastic Injection Mold, Machining, Turning, Welding, Rubber Mold At Quest Industries, we're experts in engineering, moldmaking, prototyping, and detail machining. The core of our business is high-quality plastic injection molds, rubber molds, and microcellular po Quest Industries in Lapeer MI. Offers EDM, Plastic Injection Mold, Machining, Turning, Welding and Rubber Mold in Michigan.