Write a letter in 130-150 words.
Write a sales letter to an old customer who placed an order with you two years ago,and draw his attention to some new products which represent a great improvement on some of the models he has sold successfully.Your
letter should cover the following particulars:
·對方是你公司的老客戶，曾大批訂購你公司生產(chǎn)的開關(guān)裝置（switchgear），之后就沒有再訂過貨。
·告知客戶你公司最近在市場推出一種最新高壓（high voltage）開關(guān)裝置，并介紹新產(chǎn)品的特點。
·隨函寄上產(chǎn)品規(guī)格及價格表供對方參考，并強調(diào)盡快訂貨的重要性。
