Dear Sir or Madam,
I saw your advertisement for a sales manager in China Daily on February 15th. In July I will receive my MBA degree from Tsinghua University. I would like to be considered for the post.
I believe I will make an eligible candidate for the position because both my educational background and work experience have been in line with the requirements mentioned in your ad. The fact that I am qualified for the position is substantiated not only by my academic achievements, but also by the rich experience I gained during my internship.
Many thanks for considering my application.