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Research Frontiers Inc is engaged in the development and marketing of technology and devices to control the flow of light. The company develops and licenses its patented suspended particle device light-control technology to other companies that manufacture and market the SPD-Smart chemical emulsion, the light-control film made from the chemical emulsion, the light-control panels made by laminating the film, electronics to power end-products incorporating the film, or lamination services for, and the end-products. Its revenue source comes from the licensing of technology.
Zepp Health Corp is engaged in the business of manufacturing smart health wearable products. The company operates in two segments: Xiaomi Wearable Products and Self-branded products & others. The product portfolio includes smartwatches and fitness bands. The majority is from Self-branded products & other segments. It generates majority of the revenue from Xiaomi Wearable Products segment.