Preeti Buildcon emerges as L1 bidder for implementation of Delhi-Ambala Line LC No.-12 RoB, RuB Project in Delhi May 27, 2026 | Awarded, Project Updates Preeti Buildcon Private Limited has emerged as Lowest Bidder (L1) for implementation of the Delhi-Ambala Line LC No.-12 RoB, RuB Project. This content is restricted.