Bidder shall have record(s) of the EPC contract experience in executing and successfully completing of at least one (1) underground natural gas pipeline or petrochemical pipeline project with a contract value greater than two hundred Million (200,000,000) Baht within the last five (5) years before due date of submission of the Bid, or EPC contract experience in executing and successfully completing of underground natural gas pipeline or petrochemical pipeline projects, for a total contract value, collectively for all referenced projects, of at least five hundred Million (500,000,000) Baht within the last five (5) years.