On Monday, 25 May, 2023, H.E. OM Macthearith, Director General of General Department of Public-Private Partnerships and officials accompanied H.E. HEM Vanndy, Secretary of State of the Ministry of Economy and Finance (MEF) in chairing the inter-ministerial meeting to discuss and provide input on the Invitation to Open Innovation Proposal for the Construction and Demolition Waste Management in Phnom Penh. The meeting was participated by representatives from the Ministry of Interior, Ministry of Land Management, Urban Planning and Construction, Ministry of Environment, Ministry of Mines and Energy, Phnom Penh City Hall, Enterprise for Managing Transfer Stations and Landfills for Solid Waste and the General Departments under MEF.