The bringing together, for the benefit of others, of oil cement, preservatives for cement, cement mixes, cement, adhesives for cement manufactured products, slag-lime cement, Portland blast-furnace slag cement, gypsum for use as building materials, limestone, fly ash for use in the manufacture of cement, excluding the transport thereof, enabling customers to conveniently view and purchase those goods; all the aforementioned services provided by retail stores, wholesale outlets, through mail order catalogues or by means of electronic media, namely, through web sites or television shopping programs