A certain technology limited company is located in Shaanxi Province, and its main business scope includes: general projects: manufacturing and sales of petroleum products (excluding hazardous chemicals); Production and sales of chemical products (excluding licensed chemical products); Manufacturing of basic chemical raw materials (excluding the manufacturing of licensed chemicals such as hazardous chemicals); Manufacturing and sales of specialized chemical products (excluding hazardous chemicals); Biomass fuel processing; Sales of coal and its products; Research and development of new material technology; Technical services, technology development, technology consulting, technology exchange, technology transfer, and technology promotion; Technology import and export; Import and export of goods; Licensed project: Production of hazardous chemicals.

In April 2025, the company had 28 petroleum ether vertical tanks that needed to be equipped with external level measuring instruments due to technological upgrades. After research and understanding, it was found that Dinghua Electronics' instrument products did not require hot work, tank cleaning, or hole opening. Therefore, it was decided to purchase Dinghua products. Up to now, it has been running steadily and normally.