establishment of business relations meaning in Chinese

建立商贸关系
建立业务关系

Having obtained your name and address from china daily , we are writing to you for the establishment of business relation with you
从中国日报上获悉贵公司名称和地址，慈致函以求建立业务关系。
We have your name and address from the commercial counselor ’ s office of your embassy in beijing and are now writing to you for the establishment of business relations
我们从贵国驻京使馆商务参赞处得悉贵公司行名和地址，现特致函与贵公司建立业务关系。