谈判和签订合同 meaning in Chinese

negotiating and signing ua contract
negotiating and signing up a contract

Stands must be manned by authorized and competent representatives of the exhibitor at all times during the exhibition . such representatives must be fully conversant with the exhibitor s products andor services and shall be duly authorized to negotiate and conclude contracts for the sale of the exhibitor s products or services
在展会期间的任何时间，摊位均须有参展商授权且胜任的代表在场，此等代表必须完全熟悉参展商的产品和或服务，而且获得正式授权为参展商产品或服务的销售谈判和签订合同。