Would you mind checking this short letter for errors?
The intent is to know or ask the prices of equipment for measuring the flow of gases.
To whom it may concern
I would very much appreciate if you sent me the prices of 3 gas flow meters described in the leaflet attached as TG 05, TG 1 and TG 3.
Thank you for your attention
So, does it read well? I actually don't know how to start and end a letter like this. In my opinion I should be a bit more polite, include an introduction or something.
Thank you very much.
Please send me the prices of the three gas flow meters described in the leaflet attached - TG05, TG1 and TG3.
You certainly don't need a personal introduction. This is a standard business-type letter. You are not trying to make friends with the recipient.
Remember - correct capitalisation, punctuation and spacing make posts much easier to read.