The system of ultra light-weight demountable stations, for exhibiting articles and attending customers, according to the present invention, comprises at least one universal module (10) of the system, with elliptical cross section, easily assembling, without mechanical elements of nailing, and with great strength. Said universal module, can be optionally joined to a connector module (17) which allows the union of two or more universal modules in a curve or straight shape or in three or more ways. The universal module or the connector module can be also optionally joined to a wing module (11), or to a multiple exhibition applications. All these components of the system act as basic pieces for creating a plurality of exhibition stations, which can be growing in the horizontal and/or vertical direction.