Great System Industry (GSI) is a premier provider of process control instrumentation and industrial automation sensors, headquartered in Hong Kong with operations since 1998. As an ISO-certified manufacturer, distributor, and trading company, GSI delivers high-precision measurement solutions—including pressure, temperature, flow, and level sensors—to over 6,000 customers worldwide. With an export ratio of 80%-90% and annual sales reaching $7-10 million, we serve diverse industries across Europe, North America, Southeast Asia, and the Middle East. Backed by a 30-member professional team, GSI combines decades of engineering expertise with rigorous quality control to ensure reliable, cost-effective solutions for every application.
For more than 25 years, we have successfully executed many prestigious orders by supplying Sophisticated Electronic Instruments and Control Systems and HT Panel and LT and Panel. Indigenization of the instruments of our product range have been in hand with our commitment to the manufacture of safe, reliable and quality instrument. Our thrust today is in the field of microprocessor based instrumentation and control systems. A knowledge inspiring and skilled arena that we are in, we are staffed to meet the dictates of the field and thus can provide various control and monitoring software packages for Instrumentation and control.
Application Gallery
Power : Feed Water (Drum Level & DP across Drum Level), Furnace Vacuum, SH Steam Temp Stage I & II (L&R), Dearator Level, Condenser Hotwell Level and REC, HP Heater Level, LP Heater Level, Gland Seal Steam Pressure, Gland Steam Temperature, Thermal Load, FD, PA and Vapor Fan Control
Oil & Gas : Platform & Pipeline, Catalytic Cracking, Distillation Columns, Blending, Reactors
Pulp & Paper : Stock Preparation, Chest Box, Bleaching
Mining : Ore Dressing, Pyro/Hydro Processing, Electrolytic Refining, Crushers, Ball Mills, Classifiers, Filters, Flotation Devices, Magnetic Separators, Calcining Kilns, Digesters, Evaporators
Food & Beverages : Evaporators, Blending & Batching, Fermenting
Steel : Blast Furnaces, Continuous Casting, Reheating Furnaces, Biological Waste Treatment, Annealing Lines Sintherization
Water & Waste Water : Filter Backwash, Chemical Feed, Clear well Level, Finished Water Pumping, Remote Workstation Monitoring, Sludge Process, Sequencing Batch Reactor Plants, Rotating Biological Contactor Plant, Sludge Dewatering, Incinerator Control, Return and Waste activated sludge pumping