35 B2B e-commerce leasing and sale of advertising space in Internet web pages or any other means of communication, initially mostly in reference to construction sector corporations; dissemination of advertising, including adverting ads and direct mail, product demonstration, prospects, printed material and research studies related to the same sector corporations; consulting and implementation assistance relative to taking out advertising space, consulting and assistance with respect to the organization and management of business and with the management of industrial and commercial companies; business management; consulting for business management; accounting and personnel management; market studies and research, including business estimates for commercial businesses; organization of exhibitions for commercial purposes and advertising, namely, initially in a horizontal marketplace by display on B28 e-commence website posting and eventually by other more traditional displays including a convention halls; promoting the purchase and sale of goods of others mainly by means of a B2B e-commerce platform, including all kinds of construction materials, mainly cement, concrete, mortar, stone, lime, plaster, gravel, floor slabs including flagstones, partitions, baked and unbaked bricks, roof slabs including tiles, mosaic, non-metallic rigid tubes and piping for construction, asphalt, tar and bitumen, non-metallic transportable construction elements such as modules, panels, pre-cast columns and non-metallic monuments, rebar, columns, steel reinforcement of all kinds for setting-up forms and pouring of concrete components and materials related to those mentioned above; consulting in relation to practices to foster the culture of saving and well as group purchasing to optimize prices and services; consulting related to data processing; data processing