== Example of Katedra/Zakład Fototechniki\'s cooperation with the industry in the 1960s ==

The letter of November 1966 from the BPW - Bydgoszcz Photochemical Works FOTON [Bydgoskie Zakłady Fotochemiczne FOTON] in Bydgoszcz (Poland) specifies suggestions on methods and quality determinations of photochemical products.