Tags tier-1 suppliers 35 local firms become tier-1 suppliers for Samsung Friday, May 31, 2019 The number of Vietnamese enterprises that have become tier-1 suppliers for Samsung has grown to 35 and is expected to reach 50 by 2020. Vietnamese firms have potential to join in global supply chain Friday, Feb 15, 2019 Although it is not easy to participate in the supply chain of multinational corporations, Vietnamese enterprises are fully capable of supplying large companies.