Engineering and technical consulting services in the fields of automation, information technology for plant process and manufacturing businesses, namely, scope of supply development; front-end engineering; engineering project estimation; technical design and layout of control cabinets; detailed electrical instrumentation design; designing hardwired safety interlock for use in plant and process; technical writing for others of cause and effect diagrams, logic diagrams, flowcharts, input-output lists, process and instrumentation diagram design or development, and control narrative definitions; design and Implementation of computer systems for integrating manufacturing and plant processes by using programmable logic controller (PLC), programmable automation controller (PAC), distributed control system (DCS), human-machine interface (HMI), manufacturing information systems (MIS), and manufacturing execution systems (MES); Engineering services in the field of multivariable controls; Engineering services in the field of model predictive controls; Technical support services, namely, troubleshooting of process control systems; designing plant process simulations for use in the testing, analysis, and evaluation of process control systems for the purpose of certification and re-certification; performing factory acceptance tests for others, namely, testing, analysis, and evaluation of process control systems for the purpose of certification and re-certification; performing site acceptance tests for others, namely, testing, analysis, and evaluation of process control systems for the purpose of certification and re-certification; computer software system maintenance; Computer engineering using software applications and cloud-based controls and information systems