Call for the Invitation for Proposal for the provision of From Farm to Plate: Value Chain Analysis (VCA) and Market Study of Premium Tilapia in the Philippines This invitation is for the provision of non-commercial services under the FAO rules that govern Letters of Agreement (hereinafter refered to as “Agreement” or “LoA”). Under these rules only non-profit, intergovernmental, and governmental organisations are eligible to sign LoAs with FAO.