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Zhihu Inc is predominantly engaged in the operation of one online content community and monetizes through paid membership services, advertising services, content-commerce solutions services, and vocational training in China. It generates revenues from Advertising services, Paid membership services, Content-commerce solutions, and Others. It derives all its revenues within China.
Lightwave Logic Inc is a United States-based development stage company moving toward commercialization of next-generation electro-optic photonic devices made on its P2IC technology platform which uses in-house proprietary high-activity and high-stability organic polymers. Electro-optical devices convert data from electric signals into optical signals for multiple applications. It designs and synthesizes organic chromophores for use in its own proprietary electro-optic polymer systems and photonic device designs.