The document discusses micro flow sensors manufactured by JSN. It provides contact information for JSN and describes the micro flow sensor as a positive displacement flow meter that can precisely measure the volumetric flow of various liquids. It lists key specifications of JSN's micro flow sensors such as flow ranges from 0.1ml/min to 660l/h, pressure ratings up to 1000bar, accuracy of 0.5%, and temperature range of -30°C to 80°C.