《经济合同法》第六条规定:“经济合同依法成立,即具有法律约束力,当事人必须全面履行合同规定的义务,任何一方不得擅自变更或解除合同。”这是合法合同得以履行的保证。1992年第六期《中国物价》刊登了四川青神机电厂《我们该怎么办》的来函,反映该厂在与四川省机械供销总公司签订合同以后,机床生产厂家在签订好的合同价格基础 Article 6 of the Law on Economic Contract stipulates: “Economic contracts are legally binding and the parties must fulfill their obligations under the contract in full, and neither party may change or rescind the contract without authorization.” “This is a legal contract to be fulfilled Guarantee. The sixth issue of ”China Price“ in 1992 published the letter of ”How should we do" of QingQing Machinery and Electric Power Plant in Sichuan Province, which shows that after the factory signed the contract with Sichuan Machinery Supply and Marketing Corporation, the machine tool manufacturer signed a good contract price basis