Hunan Lijia Instrument Co., Ltd. has passed ISO9001 quality certification. Our company is a large-scale advanced flowmeter production base in Hunan. Since its establishment in 1994, our company has continuously made progress and grown, with a team of experienced automation professionals (3 professors and 15 senior engineers) who can provide one-stop services for the design, production, installation, and commissioning of automatic control systems. On the basis of absorbing advanced technologies at home and abroad, we continuously update and develop new products. Currently, our products include LJ series diffusion silicon pressure and liquid level transmitters LJYC and LJCC capacitive pressure and differential pressure transmitters, LJSFM series vortex flow meters, Sails V+V series multivariable conical mass flow meters, LJ2000 series bend flow meters, LJ series balance flow meters, LJ series turbine flow meters, LJ series ultrasonic open channel flow meters, LJ series Yokogawa EJA+LJX series wedge mass flow meters, LJ series standard throttling devices, LJ series digital display instruments, water meters, liquid level control boxes, Rosemount 3051S+LJB series strong bar mass flow meters and annular orifice flow meters, LJ series ultrasonic vortex street flow meters with SL servo controllers, have obtained international level invention patents. LJSFM series vortex flow meters have won the second prize of national scientific and technological invention. Our company's products have been widely used in industries such as petroleum, chemical, light industry, smelting, machinery, commerce, and civilian use. Under the complex working conditions of enterprises such as Zhuzhou Metallurgical, Zhuzhou Chemical, Wuhan Iron and Steel, Xiangtan Iron and Steel, Sanmenxia, Liyujiang, Shimen Power Plant, etc., after long-term use and testing by these super large enterprises, they have received high praise. Our company has been engaged in the development of intelligent products and the installation of intelligent system engineering for many years. We are capable of independently undertaking weak current series projects (building intercom, home anti-theft alarm, parking lot management, community background music and electronic patrol, surrounding prevention systems, etc.), and our business scope continues to expand. We have successfully completed many weak current system projects in intelligent communities and received high praise from customers. Our company adheres to the business policy of quality first, customer first, and reputation first, and is dedicated to serving our customers.