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Psychemedics Corp is engaged in providing testing services for the detection of drugs of abuse through the analysis of hair samples. The company operates through a single segment of drug testing services which include training for the collection of samples and storage of positive samples for its customers for an agreed-upon fee per unit testing of samples. The testing methods of the company utilize a patented technology that digests the hair and releases drugs trapped in the hair without destroying the drugs. They provide testing services for the detection of drugs of abuse and other health markers through the analysis of hair samples. Geographically it generates the majority of its revenue from the United States.
Chicago Rivet & Machine Co is in the fastener industry in North America. The company operates in two segments namely fasteners and assembly equipment. Its fastener segment consists of the manufacture and sale of rivets, cold-formed fasteners, parts, and screw machine products. The assembly equipment segment consists mainly of the manufacture of automatic rivet setting machines, automatic assembly equipment, and parts and tools for such machines. The majority of revenue is from the fastener segment. Geographically, the majority is from the United States.