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Cordys North America is a Pleasanton, CA-based company in the Software and Internet sector.
Zecurion is a New York, NY-based company in the Software and Internet sector.
Psicurity is a San Francisco, CA-based company in the Software and Internet sector.
ProMation Systems is a Minneapolis, MN-based company in the Software and Internet sector.
Founded in 2011, a peer-to-peer network of knowledge, expertise and insight is what Zhihu is trying to build. Zhihus mission is to connect people and the knowledge, know-how, expertise and first-hand information constrained in each individuals mind.