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Wah Fu Education Group Ltd is involved in providing online exam preparation services and related technology solutions and also produces online training course materials in China. It develops online educational materials that are offered through the cloud and that can be used for a wide range of purposes, such as standard examination preparation, professional training, and interactive programs for educational purposes other than exam preparation. Its segments are Online Education Services, and Technological Development and Operation Service. The company generates maximum revenue from the Online Education Services segment.
Enservco Corp operates in the oil and gas industry. It offers well enhancement and fluid management services to the domestic onshore oil and natural gas industry. The services include frac water heating, hot oiling, pressure testing, acidizing, bacteria and scale treatment, freshwater and saltwater hauling, fluid disposal, frac tank rental, well site construction, and other general oil field services. The company's reportable business segments are Production Services and Completion and Other Services, which derives maximum revenue. It operates in geographically diverse regions of the United States.