Niva Medical Co. Niva Medical Co. is the European and Middle Eastern representative for American manufacturers:Mettler Electronics Corp. and Whitehall Manufacturing Inc. Since the introduction of the Sonicator 700 in 1957, Mettler Electronics Corp. has continued to provide portable ultrasound and electro-stimulation therapy equipment used in sports medicine, physical therapy, chiropractic and podiatric health care. For over five decades, Whitehall Mfg. Inc. has been a leading producer of quality hydrotherapy and healthcare equipment, including Scrub-Ware surgical scrub sinks, Care-Ware bedside care units, heat and cold therapy treatment products, and hydrotherapy products, such as Whirlpools and Hydrolift systems. Niva Medical Oy manufacturers Polar Frost Pain Relieving Gel, Polar Band Exercise band, Polar TENS, Polar Trode -electrodes and Polar Shock Wave.