42 Professional consultations and advice relating to engineering, fluid technology, liquid filling systems and pumping systems; technological and research and consultation services relating to engineering, fluid technology, liquid filling systems and pumping systems; custom design of fluid technology systems, liquid filling systems, pumping systems and flow control systems; consultancy, provision of information and technical advisory services relating to custom design, repair, installation, commissioning and maintenance of fluid technology systems, liquid filling systems, pumping systems and flow control systems; research and feasibility studies; inspection and audit of fluid technology systems, liquid filling systems and pumping systems.