From the notice

Personal Protective Equipment For MSC-K, South Korea. The Government intends to award Basic Purchase Agreement for this procurement. All sources may submit a proposal or quote as applicable. However, the Republic of Korea (ROK)-United States (U.S.) Status of Forces Agreement (SOFA), precludes the U.S. Government from granting Invited Contractor or Technical Representative Status to any offeror, for this requirement. All sources submitting a proposal or quote, as applicable, including U.S. sources, must already have, or obtain the requisite business licenses directly from the ROK Government, and conduct business in accordance with all applicable ROK laws, including but not limited to, rules and policies regarding labor, taxation, and immigration. Any contractor not already doing business in Korea, must submit adequate verification in its initial proposal or quote- that it has the requisite business licenses directly from the ROK Government to perform the contract and the capacity to conduct business in accordance with all applicable ROK laws, including but not limited to, rules and policies regarding labor, taxation, and immigration. If an initial proposal does not fully demonstrate this authorization and capacity, it will not be further considered for award.