**Shandong Zhonghui Instrument Co., Ltd. ** was founded in 1999 and is located in the National High-Tech Industrial Development Zone of Zibo City, Shandong Province. The company is recognized as a **High-Tech Enterprise**, a **Patent Star Enterprise**, and a **Hidden Champion Enterprise** of Shandong Province.

Specializing in the research, development, manufacturing, and sales of petroleum product testing instruments and SF6 gas detection and analysis instruments**, the company's products are widely used in power, petroleum, chemical, scientific research, defense, and other fields. It has its own product development, manufacturing, testing, and technical service base, and operates a **Shandong Provincial Academician Workstation** and a **Zibo City Engineering Technology Research Center**. The company also serves as a member unit of the **National Standard Technical Committee**.

The company holds 19 national invention patents and 76 national utility model and design patents, earning the title of **"Shandong Patent Star Enterprise"**.

It has developed ground detection and analysis instruments for China's large passenger aircraft and has participated in drafting national and industry standards. The company has undertaken various projects, including national technical support programs, public welfare projects, the National Torch Program, the Ministry of Science and Technology Innovation Fund projects, national defense construction projects, as well as projects for State Grid, power generation companies, universities, and provincial/municipal initiatives.

The core technology of the company's products stems from continuous innovation, which has established the Zhonghui brand. Over 60 series of products developed and manufactured by the company are operating reliably and safely in professional laboratories both domestically and internationally. The products dominate the domestic market and are also exported to more than 20 countries, including Greece, Russia, Pakistan, Myanmar, Thailand, Vietnam, India, and Sudan.