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Continue to ChatCzechnology: Chrudim, Pardubice Region start-up "CityZen" develops cotton T-shirt that doesn't show sweat stains; fabric's special treatment remains closely guarded secret (Aktualne.cz) [Social Media Post] https://praguepig.com/2019/06/czechnology-chrudim-pardubice-region-start-up-cityzen-develops-cotton-t-shirt-that-doesnt-show-sweat-stains-fabrics-special-treatment-remains-closely-guarded-secret-aktualne-cz-social-me/