Sansiri Plc has signed a memorandum of understanding (MoU) with Pace Development Corporation Plc and Pace Project Two Co Ltd (Pace Development Group) for purchase negotiations and due diligence ofNimit Lang Suan project and 53 condominium units of Ritz-Carlton Residences Bangkok in the MahaNakhon building project, according to the company’s report to the Stock Exchange of Thailand late on Tuesday.