Answer:
Social networks
Step-by-step explanation:
Business relationship in Vietnam depends largely on social relationship and network.It occurs through sharing of personal lifestyle , political and sports view . The interaction may not directly be connected to business but it could open up opportunities for business and even referrals.This means that someone with a very good and lively social life has a higher tendency of recording a good success in business.
The system make use of internet , calls ,email , brochures , advertisement , trade fair as media of propagating business