Advantage Mold, Inc. | Plastic Mold Manufacturers. Advantage Mold, Plastic Injection Mold, Plastic Mold Manufacturing, Custom Mold, Prototype Molds, Production Tooling, Injection Mold Industry, 3-D Mold, Aluminum Prototype, Prehard Prototype, Wire EDM, Sinker EDM, Milling Machines, Axis, Londonderry, NH. Advantage Mold, Inc., produces high quality, prototype and production tooling for the injection molding industry.