项目合同和一般的销售和购买合同有什么区别？
Project contract and general sales and purchase contracts have what differentiation?
项目合同与一般的销售和采购合同有什么区别？
What is the difference between a project contract and an ordinary sales and purchase contract?
项目合同与一般的销售和采购合同有什么区别？
What is the difference between a project contract and an ordinary sales and purchase contract?
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