Domestic Resource Cost (DRC) DRC j =  s=2 F sj V s j / (U j – M j - r j ) DRC j is the domestic resource costs input for j production, F sj is the quantity of s th input factor for j production, V s is the opportunity cost of s th input factor, U j is the output value of j production calculated by border price, M j is the value of tradable input factors for j production, calculated by C.I.F price, R j is the factor costs of direct foreign investments, calculated by opportunity costs, S is the number of input factors, as foreign currency is taken as the first one, then S is numbered from 2 to m,
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