On May 9, nanjing harmonica association guided by President Liu Dexing visited our east musical instrument company ,they visited the harmonica production line, and put forward Suggestions for improvement of products and tried blowing the latest harmonica which is trial production of the sound spring ,they are all full of praises ,and think it is as goog as imported harmonica .The two sides both think it is necessary to strengthen cooperation and contact ,make efforts to improve the quality of the product and enlarge effects’of harmonicas .two sides should support for each other and get win-win cooperation.