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Tatsuya Nakagawa
Tatsuya Nakagawa is an accomplished entrepreneur, author, and expert on innovation & marketing.
He is the co-founder of Castagra Products. Castagra develops, proves and delivers, game changing innovations for the building materials and coatings industry.
http://www.castagra.com/
http://castagraroofing.com/
https://www.linkedin.com/in/tatsuya/
https://twitter.com/tatsuyanakagawa
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