GSI FLO is a full-service fluid power distributor, and also specializes in electrical/electronic temperature, pressure, and linear position devices. We serve the 4 state area of Missouri, Southern Illinois, Kansas and Nebraska. GSI FLO, Custom Products Division, is a nation-wide controls system integration and service company. GSI FLO specializes in the design, construction and servicing of Custom Hydraulic Power Supplies, PLC & Relay Logic Panels, Electro-Proportional Control Systems, Pneumatic Panels, Central Control Systems, Special Test Equipment & Systems, and Assembly & Manufacturing.