They shall also include rules of origin used for government procurement and trade statistics. 还应包括用于政府采购和贸易统计的原产地规则。
Rules of origin are the basis for a country to treat cargos differently in order to protect the advantages of its own cargos. 在世界范围内制定并使用统一的原产地规则之前，各国仍可使用各自的原产地规则。
