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Researchers at the University of Sheffield in the U.K. developed small robots called "Pipebots" that can travel inside water ...

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Find the latest Perma-Pipe International Holdings, Inc. (PPIH) stock quote, history, news and other vital information to help you with your stock trading and investing.

Researchers at the University of Sheffield in the U.K. developed small robots called “Pipebots” that can travel inside water pipes to find and potentially repair leaks, all without any excavation.