Dear Lijun, I am writing to you to call your attentionto on some problems about sales pe\roblems as follows. First,_内容1___.Second,_内容2_____.Third,___内容3___. In a word,there is much room for improvement in sales and it is essential and urgent for you to take measures to consider.So I do hope it can be solved. Thank you for your time and kind consideration. Sincerely yours, Wangjun