An economic contract shall also include as its principal clauses those whose inclusion is stipulated by law or by virtue of the nature of the economic contract, or whose inclusion is considered as indispensable by either party to the contract.
An economic contract shall also include as its principal clauses those whose inclusion is stipulated by law or by virtue of the nature of the economic contract, or whose inclusion is considered as indispensable by either party to the contract.
根据法律规定的或按经济合同性质必须具备的条款，以及当事人一方要求必须规定的条款，也是经济合同的主要条款。