A wholly owned subsidiary of the privately held Mack Group, Inc., which runs 11 manufacturing facilities in the eastern United States and Mexico, is Mack Prototype, Inc. Along with product design, development, bespoke injection moulding, sheet metal fabrication, machining, printed circuit board assembly, complete product assembly, and order fulfilment, Mack Prototype completes Mack's growing range of vertically integrated services.When Mack Group purchased Apple Pattern and Compression Engineering in 1999, Mack Prototype was born. For low volume production applications, this purchase combined rapid prototyping and rapid manufacturing. To help customers today, Mack Prototype collaborates closely with them to design quick production solutions depending on their budget, timeframe, quantity, and quality needs.