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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.
TDH Holdings Inc is engaged in the business of manufacturing and selling of petfood and restaurant operations. The company has two operating segments which include Petfood sales and Restaurant business. It has a focus on the Restaurant business segment and generates the majority of its revenue.