How to start or procedure Business Development with a buyer?

Apparel industry must be developed with the trend of market otherwise they cannot extend their business. To collect new buyer and business with them a company must follow the procedure of business development. Buyers have been chosen by two ways. Firstly, Buyer chooses the supplier and the second one sometimes, "X" want to work with a particular buyer and then contact with them according to that. The "X" GROUP follow the procedure of business development, this are given below-