Huygen Corporation is a manufacturer and distributor of optical instruments and sensors based in Crystal Lake. The company offers a wide range of products and services to clients in the military, aerospace, aviation and plastics industries. It offers individual equipment evaluations, sample testing, calibration services, portable light meters and laboratory test equipment.
D & I Electronics specializes in residential and commercial fire and burglar alarm systems. The company also installs household central vacuum systems and intercoms. Owner Martin Ivec holds five patents on his company's technology. In business more than thirty-five years, D & I Electronics is located on Caton Farm Road just east of Drauden Road.
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