A. As is known, we set great store by the trade relationship with the third world countries.B. We’ve never had any difficulties with our Chinese partners, and we ’ d like to make as many new contacts as we can.C. We have been working on expanding our scope of cooperation with China.D. Although we have not heard from you for quite some time, we hope your business is progressing satisfactorily.众所周知，我们十分重视同第三世界国家的贸易关系。