Amaravati, Dec 4 (SocialNews.XYZ) Andhra Pradesh Chief Minister Nara Chandrababu Naidu said on Thursday that more than 50 per cent of the MoUs signed at the recent CII Partnership Summit are already moving into the approval stage, and directed officials to ensure that foundation stones for these projects are laid within 45 days. He was addressing the 13th State Level Investment Board (SIPB) at the Secretariat on Thursday.