Dear Sir or Madam,
Last year we bought many lambswool pullovers from you, which we were very satisfied with.
As we are about to place our orders for the coming season, we would be grateful if you could send us a detailed offer at your earliest convenience.
As seen in your offer last year, you manufacture also Twinsets.
Please send us a colour sample card and information about the quality and quantity which you can supply.
If terms and conditions and prices are acceptable, we should gladly cover our total future needs of lambswool knitted-goods from you.