Yeajin E&C Co.,Ltd.

Yeajin E&C Co., Ltd., a South Korean construction and facilities maintenance company headquartered in Daegu, operates as a prime contractor delivering repair, upgrade, operation, and maintenance services for U.S. military infrastructure across the Pacific region. The vendor competes in full-and-open federal procurement with no set-aside participation; all 97 awards in the source carry no set-aside designation, reflecting competitive selection across Defense Department agencies.

Yeajin E&C's capability portfolio centers on HVAC system replacement and repair, water treatment plant maintenance, sewage and water infrastructure, electrical upgrades, fire alarm and detection systems, structural repairs, building renovations, and pavement work at forward-deployed U.S. Forces Korea installations. Representative work includes a $5.97 million dormitory renovation at Kunsan Air Base (awarded October 2025, completion December 2026), a $6.15 million chiller and HVAC system replacement at Camp Mujuk for the U.S. Marine Corps (awarded August 2024, completion December 2025), a $4.28 million barracks repair at Camp Carroll (awarded July 2024, completion August 2026), and a $658 thousand airfield pavement marking repair at Kunsan Air Base (awarded October 2025, completion May 2026). The vendor also executes routine maintenance task orders ranging from under $25,000 for fire hydrant replacement and sprinkler system work to mid-six-figure orders for water line replacement, HVAC system upgrades, and facility renovations across Camp Carroll, Camp Henry, Camp Walker, Camp Humphreys, Osan Air Base, and subordinate facilities.

Customer concentration is extremely narrow. The Department of the Army Installation Management Command Pacific Region accounts for 86 of 97 awards (99% of award count) with $799.3 million in combined potential value—essentially the vendor's entire federal footprint. The remaining four customer agencies (Pacific Air Forces, Marine Corps, Navy Installations Command, and Army Installation Management Command Korean Region) represent seven awards totaling approximately $16.7 million in potential value. This concentration is decision-flipping: Yeajin E&C's federal business is functionally a single-customer vendor relationship with Army Pacific Region.

The vendor holds five active indefinite delivery contracts. Two cornerstone $245 million single-award IDCs for general construction, repair, and upgrade of U.S. Forces Korea facilities in Areas I, II, III, and IV (awarded October 5, 2023, extending through October 4, 2028) anchor the footprint; 61 delivery orders valued at $23.6 million and 11 delivery orders valued at $11.9 million, respectively, have been issued against these vehicles under contract numbers W91QVN24D0110 and W91QVN24D0109. A $20 million multiple-award IDC for minor general building repair and construction at U.S. Army Garrison Daegu (awarded April 5, 2024, extending through April 4, 2029) carries a $250,000 task-order ceiling and has generated nine task orders valued at $1.6 million. A $9.5 million single-award IDC for asphalt concrete pavement repair and upgrade in Area IV (awarded April 15, 2025, extending through April 14, 2030) commenced with a $3,000 delivery order in May 2025. A $2.17 million single-award IDC for operation, maintenance, inspection, management, and repair of water treatment plants, wastewater treatment, HVAC systems, and utility lines at Camp Carroll Forward Operating Site (awarded April 1, 2026, extending through December 31, 2030) represents the newest vehicle. A legacy $2.10 million single-award IDC for operation and maintenance services at Carroll Forward Operating Site (awarded September 27, 2021, with completion through January 31, 2026) is nearing expiration.

Activity has accelerated sharply. The vendor issued two awards in 2022, four in 2023, 39 in 2024, 33 in 2025, and 15 year-to-date in 2026. Combined potential value across all 97 awards stands at $816.2 million, with $47.3 million in combined obligations (6% of potential value), indicating the majority of the portfolio remains unfunded task order capacity. Twenty awards with ultimate completion dates in the next twenty-four months carry $21.3 million in combined potential value and will reach recompete in that window.

The vendor has no subcontract footprint; all 97 awards are prime contracts and IDVs. Yeajin E&C registered in the System for Award Management on June 16, 2019, and operates as a foreign-owned, for-profit entity with no U.S. SBA certifications. The company's federal contracting presence is entirely rooted in in-country infrastructure support at U.S. military installations in South Korea, with place of performance exclusively in South Korea across CONUS and OCONUS military sites. The vendor does not hold positions on government-wide acquisition contracts, GSA Schedules, or multi-agency vehicles outside the Defense Department Pacific Region infrastructure ecosystem.