preparation for others of specifications for hardware to be installed in commercial and residential buildings; retail sales services and distributorship services in the field of hardware, namely, lock and door hardware, doors and frames, washroom accessories, toilet partitions and compartments, folding partitions, free-standing panels, signage, graphics, chalkboards, tackboards, fire protection equipment, lockers, storage shelving, flagpoles, louvers, access doors and flooring, projection screens, floor mats, security devices for commercial and residential buildings; product development consultation and product design for others in the field of hardware for commercial and residential buildings