An evolving mobile Unit for controlled product storage and dispensing, with modular construction and multiple upgrade possibilities, to the capacity and storing / picking system that can evolve from manual, up to fully automatic operation. The Unit is easy to transport and maneuver, by crane or forklift, using the provided pick up points (6) and pockets (7), either in standard or heavy duty / all-weather form. The Unit can be autonomous, with an integrated power unit (49) and internal climate control (19). The products are stored inside, within Unit Loads (UL) (8) that can hold any kind of materials, either solid or liquid, at ambient or controlled temperature and humidity. The ULs are stored in a modular shelving system (9), adjustable to accommodate mixes of UL sizes. Access control is provided by lock (11), drawer (16) and software systems together with a picking / replenishment method. The software controls the ULs multiple locations (12), and manages the picking method, either in manual, manual assisted, Basic Semi-Automatic, Semi-automatic or Fully-automatic versions, using Cartesian coordinate robots (14) for storing / picking the desired products. These and other features, aspects, and advantages of the present invention will become clearer with the following description, appended claims, and accompanying drawings.