does the subject want to ask "who won the bid for the general contracting project of the fourth bid section of Wuhu Tianma"? China Railway 15th Bureau. According to official website of Wuhu Construction Bureau, the general contracting project of Tianma No.4 Bid Section was undertaken by China Railway No.15 Bureau. Winning the bid refers to the behavior that the tenderee sends a bid-winning notice to the selected bidder and signs a written contract with it within the specified time.