REFR vs DUO Comparison

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. The company's revenue source comes from the licensing of technology.

Fangdd Network Group Ltd is an investment holding company. It is engaged in the provision of real estate information services through its online platform which also offers integrated marketing services for individual customers, real estate developers, and agents in China. Its SaaS-based solutions help real estate agents to connect with essential business resources, including customers, property listings, capital, and transaction data. The company generates the majority of its revenue from Base commission from transactions in China. All revenues of the Group are derived from the PRC.