Sino-US joint venture Liaoyang Keao Instrument (Group) Company, is set instruments, meters and valves of the R & D, manufacturing, marketing and service in one of the high-tech enterprise, its predecessor was Keao Instrument Instrument Factory, Liaoyang City, is the Ministry of Machinery Industry and the chemical industry the professional production of the specified Level Meter manufacturers. The plant was established in 1981, has many years of production history and a wealth of practical experience, covers an area of ??15,000 square meters, construction area of ??10,000 square meters. More than 130 employees, 25 senior engineers and technicians in the people (American 3), 33 engineers, 15 assistant engineers, 10 technicians, accounting for more than 60% of the total number of employees. The company has strong product base and the material base and advanced test equipment and instrumentation. Enterprises through 2000, ISO9001: 2000 quality system certification, is the China National Petroleum Corporation, a supplier of refinery equipment. 
 After nearly 20 years of business operations, the company's products include 58 series, 60 varieties, more than 100 specifications, and has a number of patented products, annual output value of more than 1000 million, of which instrument leading products are: "High Temperature high-pressure "glass level gauge, magnetic level gauge sub-account for about 30%, can be adapted to various occasions of level measurement and producer. Equipment leading products are: water bath, constant temperature oil bath, low temperature bath, drying oven, incubator, aging me, concentration, mixer, electric sets, oscillator (shaking), high temperature resistance furnace, oil analysis instruments, biochemistry, physical and chemical apparatus and temperature sensors, thermocouple and thermometer test slot. The products are widely used in petrochemical, fertilizer, electric power, metallurgy, shipbuilding, light industry, food, coal, machinery and other industries, sold in 28 provinces (municipalities), autonomous regions and departments of foreign markets. In particular, a joint venture in 2003 and Ohio, the introduction of high technology developed by U.S. RF Admittance Level Transmitter, "RMS7" eight-channel, small DCS system, sold abroad, the majority of users. 
 Since its inception, the active development of new products, continued to introduce advanced technology and processes, product quality, process, technology has gradually increased, a variety of product awards, for many years was named "Product Quality Trustworthy Unit" "AAA Grade Credit Unit "contract and trustworthy enterprises with the honorary title, with its high quality products, inexpensive, safe, reliable and get the majority of users, and the establishment of long-term stable relations of cooperation. 
 Company has always been "quality first, integrity-based" Keao philosophy, dedicated to customer service, high-performance, high-quality products to create a "Northeast Keao" brand.