1 The Regional level The project promoter will submit its proposal to the relevant regional group

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1. The Regional level: The project promoter will submit its proposal to the relevant regional group.
Did someone email you a U3I file and youre not sure how to open it Maybe you have found a U3I file on your computer and wondering what its for Windows might tell you that you cant open it or in the worst case you might encounter a U3I file related error message

Can you repeat this sentence, but add in punctuation?
Did someone email you a U3I file and you're not sure how to open it? Maybe you have found a U3I file on your computer and wondering what it's for? Windows might tell you that you can't open it, or in the worst case, you might encounter a U3I file related error message.
Lenses prisms mirrors and other optical elements mounted of any material for instruments or apparatus excl objective lenses for cameras projectors or photographic enlargers or reducers such elements of glass not optically worked and filters

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Lenses, prisms, mirrors and other optical elements, mounted, of any material, for instruments or apparatus (excl. objective lenses for cameras, projectors or photographic enlargers or reducers, such elements of glass not optically worked, and filters)