CONTOOCOOK, N.H.--(BUSINESS WIRE)--Prototek Holdings LLC ("Prototek"), a leading North American digital manufacturing provider of CNC machining, sheet metal and industrial 3D printing focused on prototyping and low volume production, today announced it completed the acquisition of ProtoCAM, a premier industrial 3D printing company located in Allentown, Pa. ProtoCAM will merge into Midwest Prototyping, Prototek's additive manufacturing arm acquired in July 2021. "The addition of ProtoCAM is anot