Sport T-Shirts private design production request - Estonia

Dear Sir/Madam,
We are writing to you because we are looking for quality t-shirt companies.
We have been searching suppliers for some time now, as we are in the middle of creating new fitness product line in the European Union then we have strict rules which we hope that you would be able to fulfill.
Unfortunately we have not found manufacturers (yet) who are able to provide the quality that we are looking for.
Because of that we would like to ask couple of questions about your company an