Therefore, the objective of providing for the fair and equitable treatment of all suppliers and contractors reflected in the preamble should be reflected in the Model Law through specific norms as and when appropriate.
因此，序言中所反映的目的，即规定公平而平等地对待所有供应商和承包商，应当酌情通过具体的准则在《示范法》中体现出来。