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Graphex Group Ltd is engaged in the sale of graphene products. It operates in three segments namely, the Graphene Products Segment includes Processing and sale of graphite and graphene-related products; the Landscape Architecture Design Segment includes Providing landscape architecture design; and the catering business focuses on the operation of restaurants. The company derives the majority of its revenue from the sale of graphene products segment.
Electro-Sensors Inc is engaged in manufacturing and selling a variety of monitoring systems that measure actual machine production and operation rates, as well as systems that regulate the speed of related machines in production processes. Its speed monitoring systems compare revolutions per minute or speed against acceptable rates as determined by a customer. It also includes a line of products that measure production counts or rates, such as parts, gallons, or board feet, alarm systems, tachometers, and other devices that translate impulses from the sensors into alarm signals, computer inputs, or digital displays that are usable by the customer.