KUCHING, Feb 2: The Sarawak Economic Development Corporation (SEDC Energy) and Gallois New Energy Materials (M) Sdn. Bhd, has signed a Memorandum of Understanding (MoU) to expedite the development of a cutting-edge graphite manufacturing plant to produce high-end spherical natural graphite and synthetic graphite in Samalaju Industrial Park, Bintulu, with an investment valued at USD 1.5 billion (about RM 6.3 billion).