Profile: H & L Mfg. specializes in wire harnesses, injection over molding, socket/connector molding and ultrasonic welding. We are an ISO 9001:2000 certified company. We also provide wire leads, wire termination and connector pigtails. We specialize in the design and manufacturing of custom insert molded components. Our insert molding is a molding process in which components are placed in the mold die prior to injecting the resin. The resin encapsulates the items inserted. We utilize ultrasonic welding for applications requiring an electrical connection to tabs or contacts not designed for crimping.