9 High pressure regulators for measuring and controlling the pressure of liquid, semi-liquid and gaseous substances in industrial processes, and instruments used for maintaining a constant upstream or downstream pressure and for regulating pressures for gases, air and liquids; low pressure regulators for measuring and controlling the pressure of liquid, semi-liquid and gaseous substances in industrial processes, and instruments used for maintaining a constant upstream or downstream pressure and for regulating pressures for gases, air and liquids; pressure regulators for measuring and controlling the pressure of liquid, semi-liquid and gaseous substances in industrial processes, and instruments used for maintaining a constant upstream or downstream pressure and for regulating pressures for gases, air and liquids; automatic flow control machines and instruments for liquids, gases, and air; back pressure relief regulators for measuring pressure and regulating pressures for gases, air and liquids; flow controllers namely, flow switches for monitoring an d controlling the flow of gases or liquids, and automatic valves for controlling the flow of gases; instrument air regulators; namely, pressure regulators for controlling fluid pressure; gauge thermometer, namely temperature sensors for industrial use; needle valves for controlling the flow of fluids; and electronic products for oil, gas and petrochemical (pipeline) and gas regulation applications, namely, electronic valves for controlling gas of fluids, gas flow monitors, fluid flow monitors