subject: IntroductionDear Mr. / Ms.,This is to introduce Mr. Frank Jones, our new marketing specialist who will be in London from April 5 to mid April on business.We shall appreciate any help you can give Mr. Jones and will always be happy to reciprocate.Yours faithfully,Yang Ning尊敬的先生/女士，現(xiàn)向您推薦我們的市場(chǎng)專家弗蘭克瓊斯先生。

他將因公務(wù)在四月五日到四月中旬期間在倫敦停留。我們將非常感謝 您向瓊斯先生提供的任何幫助，并非常愿意回報(bào)您的幫助。您誠(chéng)摯的楊寧