TOPS was established in 2005 and is located in Bao'an District, Shenzhen. It is a national high-tech enterprise and a Shenzhen specialized and sophisticated small and medium-sized enterprise. Since its inception, the company has been focusing on the R&D, production, sales, and service of reliability testing equipment such as "high and low temperature test chambers, high and low temperature damp heat test chambers, rapid temperature change test chambers, thermal shock test chambers, and high and low temperature low-pressure test chambers" for 21 years. The company holds 25 product patents and 18 software copyrights, making it one of the domestic peers with core technologies. Leveraging the rapid development of the domestic manufacturing industry over the past 20 years and adhering to the R&D design philosophy of "technology leadership, quality first," Dingzhun has accumulated technical expertise through continuous R&D investment over 20 years. This has enabled Dingzhun's products to successfully enter the supply chain systems of global and domestic leading companies such as "Flextronics、Amphenol、Harman、Garmin、Skullcandy、II-VI、Friwo、Varta、COMPEQ、Simplo、LITEON、Primax、LEI、TPK、HELE、SUNWODA、NVT、ATL、CATL、LG、TDK、Murata、BYD、CHANGAN、Leapmotor、BOE、VARITRONIX、LAIBAO、Gaofa、Unilumin、NEWPOS、Skyworth、TCL、SINOCARE、Mindray、DJI、Shokz、ROBOROCK、SMOORE、HET、TOPBAND、HMJD、Fenghua、CENKER、JIANHAO、Sinopack、Sinofuse、Kaifa、Newmicro、THUNDER SOFT、CHGK、STATE、Halo、Yeestor、Vtest、SINDI、3onedata、TP-Link、CreatComm、Sunway、DEGSON、LIDA、CHIKU".

The company's products include high and low temperature (damp heat) test chambers, rapid temperature change test chambers, thermal shock test chambers, high and low temperature low-pressure test chambers, temperature and humidity combined vibration test chambers, and other customized climate environment simulation test chambers; as well as drop, tensile, insertion/withdrawal force testers and other customized mechanical environment simulation machines.

In addition to domestic sales, the products are also exported to countries such as the United States, Germany, Sweden, Singapore, Malaysia, India, and Vietnam. They are widely used in fields such as electrical and communication, optoelectronic displays, consumer electronics, automotive electronics, connectors and wiring harnesses, new energy lithium batteries, aerospace, and scientific research and military industries. At the same time, leveraging extensive customized applications in the consumer electronics, automotive electronics, new energy lithium batteries & connector wiring harnesses, and 5G communication & semiconductor components industries, Dingzhun has become one of the leading companies in the reliability testing equipment manufacturing sector within these four specialized areas.