English to Czech Tech/Engineering Chemistry; Chem Sci/Eng coatings

Kontexty např.: Use of chromium trioxide for chemical conversion and slurry coating applications by aerospace companies and their suppliers.
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The authorisation for the use of chromium trioxide is not granted for chemical conversion and slurry coating applications by the aerospace sector where none of the key functionalities listed in the use is necessary for the intended use.
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Případně viz internet: http://jdem.cz/ffu9h7.
Děkuji předem.