Dear sirs,
Allow me to convey my congratulations on your promotion to Minister of trade.I am delighted that many years service you have given to your country should have been recognized and appreciated.
We wish you success in your new post and look forward to closer cooperation with you in the development of trade between our two countries.
Sincerely
尊敬的部长先生，
请允许我向您升任贸易部长表示祝贺。多年来您对***的贡献被认可欣赏，我非常高兴。我们祝愿您在新的职位取得成功，期待我们两国在贸易发展上进一步合作。
诚挚的