Brand Introduction：SOR Corporation (Chinese name: 索尔), founded in 1946 and headquartered in the capital of the state of Kansas, is the world's only professional international company that produces all kinds of mechanical and electronic pressure, differential pressure, temperature, flow, liquid level controllers and transmitters. With the 300 employees, its output of pressure controller products ranks first in the world. SOR pressure controller products mainly adopt static O-ring sealed piston diaphragm structure, which is characterized by strong anti-seismic and anti-overpressure capability, wide measuring range with slight return difference, long service life, etc. The controller with high static pressure and low pressure differential produced by SOR is unique in the world. Its nuclear grade pressure products are also the only products in the world that have obtained IEEE certification.