In 1992, Deng Xiaoping's speech on his tour to the south inspired the passion and dream of entrepreneurship in the whole society. Dinghua Electronics (DHE) was founded to provide the world with first-class automation instruments!

ELL sonar type external liquid level gauge is mass produced and widely used in industrial field. The picture shows the application site of Zhenhai Refining and Chemical at that time.

Dinghua Electronics was certified as a national high-tech enterprise, and the sonar type external liquid level gauge was recognized by experts, users and mainstream media at home and abroad. It is called "a revolution in world level measurement technology"

The "self calibration" precision compensation technology was invented, and the measurement accuracy reached 0.1 level.

ELL sonar type external liquid level gauge has become the first liquid level instrument in the hazardous chemicals liquid level measurement segment market in the chlor alkali industry, and the preferred liquid level instrument for liquid chlorine and VCM single storage tanks in major design institutes.

The first ELL ultrasonic external liquid level switch of Dinghua Electronics was offline and applied in the industrial field.

ELL sonar type external measuring liquid level gauge realizes the outlet for the first time.

Dinghua Electronics has become an access unit for equipment and material production (supplier) in Lanzhou Military Region.

ELL sonar type external liquid level gauge has been successfully applied to Sinopec's ten million ton refining project.

Through more than ten years of unremitting efforts, Dinghua Electronics was the only domestic instrument editing enterprise in that year. Promote the external liquid level instrument to enter the national industry standard (HG/T 21581-2009). Mark that the external measuring liquid level instrument has become the mainstream instrument for measuring the liquid level of hazardous chemicals.

The off-line of the external liquid level switch using the "frequency conversion ultrasonic" technology has completely solved the problems of poor reliability, general accuracy and large manual maintenance of the traditional external measuring, sticking and external liquid level switches.

Dinghua Electronics and Xi'an Jiaotong University jointly built the Internet of Things Technology Engineering Research Center.

Dinghua Electronics won the first prize of Shaanxi Science and Technology Award.

The accumulative sales volume of ELL external liquid level instruments exceeds 10000. It has won high praise from users and design units. Dinghua Electronics has become an excellent supplier of products of large enterprise groups such as the military, PetroChina, Sinopec, CNOOC and Sinochem.

The intrinsically safe external liquid level instrument is offline. Due to the needs of business development, Dinghua Electronics was restructured into Xi'an Dinghua Electronics Co., Ltd.

Dinghua Electronics, as the first stock in the field of monitoring the storage and transportation of dangerous chemicals in China, landed on the NEEQ (stock abbreviation: Dinghua Electronics, stock code: 837793) and was listed in the national SME stock transfer system.

Dinghua Electronics was awarded the title of "Specialized, Special and New" SME in Shaanxi Province.

Dinghua Electronics won the second prize of the National Technological Invention Award. ELL ultrasonic external liquid level switch has enhanced the mass production of Generation III, added lightning protection and fault remote output functions, and the host adopts dual chamber explosion-proof design.

DHE series radar level meter and tuning fork level switch are widely used. And Dinghua Electronics was recognized as a small giant enterprise of science and technology in Xi'an.

Dinghua Electronics won the title of "Shaanxi Industrial Boutique", "Xi'an Military civilian Integration" enterprise, and "Shaanxi Military civilian Integration" key product.

Dinghua Electronics was awarded the "Key Scientific and Technological Innovation Team of Shaanxi Province".

In 2022, the company won the "Shaanxi Province Science and Technology Progress Third Prize Certificate"

Dinghua Electronics was awarded the Intellectual Property Management System Certification (GB/T29490-2013).
ELL series external level meters and DHE series radar level meters obtained German TUV SUD SIL2 certification.