Watch these entrepreneurs pour their hearts out, giving the life stories behind their businesses.

00:08 CIRCADIAN OPTICS
11:13 NEURO
20:17 CUP BOARD PRO

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About Shark Tank: The Sharks – tough, selfmade, multimillionaire and billionaire tycoons – continue their search to invest in the best businesses and products that America has to offer. The Sharks will once again give people from all walks of life the chance to chase the American dream and potentially secure business deals that could make them millionaires.

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