... (IACC) Doing Business in Vietnam: 2011 Country Commercial Guide for U.S. Companies INTERNATIONAL COPYRIGHT, U.S. & FOREIGN COMMERCIAL SERVICE AND U.S. DEPARTMENT OF STATE, 2011. ALL ... arrangements: check the bona fides of every business, be it agent or customer, before entering into a business arrangement. One obvious way to check the quality of a business and its management is to ... traditional telemarketing, door-to-door selling, and workplace marketing in urban areas. For business- to -business marketing, direct mailings/faxes and emails are widely used; however, mailing list...