编辑同志:某公司挂靠我公司以我公司名义投标某项政府改造工程。为争取业务,该公司采取低价投标策略并中标。开工后他们发现,若按中标价格继续施工,公司将严重亏损。于是该公司放弃项目,将承包责任推给我公司,而我公司作为法律上的投标中标人,不得不接管该项施工工程,若继续施工得承担亏损。请问,我司可否以“低价中标”为由,主张合同无效?广州王先生王先生: Edit comrades: a company affiliated to my company in the name of my company bidding for a government renovation project. In order to win business, the company adopted a bidding strategy and won the bid. After starting their work, they found that the company will suffer a serious loss if it continues construction at the winning bid price. So the company to give up the project, the contract responsibility to my company, and my company as a legal tender successful bidder, had to take over the construction project, if you continue to bear the loss of construction. Excuse me, our company can “low bid ” as an excuse, the contract is invalid? Mr. Wang of Guangzhou Mr. Wang: