1970
1971︱ The company was officially registered and established, becoming the first domestic pressure gauge and thermometer manufacturer to obtain a weights and measures license.
1974 ︱Started exporting products.
1980
1987︱ The first domestic pressure gauge manufacturer to obtain UL certification.
1988 ︱Recommended manufacturer by China Petroleum Corporation
1990
1994︱ The first domestic pressure gauge manufacturer to obtain FM certification.
1995︱ Established a Sino-foreign joint venture for force pressure gauges in Xi’an with Xi’an Petroleum Exploration Company.
2000
2000︱ The first domestic pressure gauge and thermometer manufacturer to obtain CE certification.
2001︱ The first domestic pressure gauge and thermometer manufacturer to obtain ISO 9001 certification.
2003︱ Develop flow instruments.
2005︱ Development of liquid level instruments.
2006︱ Started producing pressure gauges for semiconductors.
2009︱ Leading in New global EPR system.