question: for exterior plastic and rubber the recommended mixing ratio is between 1:10 and 1:1. a mixing ratio of 1:1 is recommended for the 'wet wet look'.
Capitalize this past sentence correctly.
A: For exterior plastic and rubber the recommended mixing ratio is between 1:10 and 1:1. A mixing ratio of 1:1 is recommended for the 'Wet Wet Look'.

question: if the quality of the delivered files does not correspond to the pnb print requirements and he has warned the client about it (by e-mail), the pnb print bears no responsibility for the outcome of printing.
Capitalize this past sentence correctly.
A: If the quality of the delivered files does not correspond to the PNB Print requirements and he has warned the Client about it (by e-mail), the PNB Print bears no responsibility for the outcome of printing.

question: the painters are also happy with the new spraytec spray gun. "it took a while before we got used to using the new spray gun.
Capitalize this past sentence correctly.
A: The painters are also happy with the new Spraytec spray gun. "It took a while before we got used to using the new spray gun.