Recommandation d'un client à une société (Lettre-type en anglais)

Dear [Mr or Mrs or Sirs], We thank you for your letter of [date], in which you enquire about [société]. I can confirm that [société] has been trading with us for now ten years and has proved to be always a most reliable and creditworthy firm. You will understand that this information is given without recourse. Yours sincerely [votre nom] [votre fonction]