城市公交车站的站牌上、小巷 胡同的电线杆上，充斥着令 人眼花缭乱的合同广告。有许诺“包技术、包质量、包销售”的，有吆喝“投资少、见效快、获利丰”的，等等。然而，你想过没有，这些涉及购销、加工承揽、货物运输、财产租赁等充满诱人条件的经济合同与技术合同，或许就 Bus stop on the city bus station alley alleys on the poles, filled with dazzling contract advertising. There are promises “package technology, package quality, package sales,” there are shouted “less investment, quick, profits”, and so on. However, you have not thought about these economic contracts and technology contracts that are full of tempting conditions such as buying and selling, processing contracts, freight forwarding, property leasing, etc.