Hydro Tech serves Grand Island and the surrounding communities. Hydro Tech offers sales and service in fire extinguisher recharge & maintenance. We specialize in the following:• Inspection Service• Hood Systems Inspections on Request• Refilling CO2 Extinguishers & Drums• High & Low Pressure Hydrostatic Testing• Dry Ice• And Much More Give us a call today so we can help with any of your questions or services needed!