In view of the serious corrosion of the instrument due to strong acid, strong alkali and strong oxidant in chemical production, the company adopts advanced production technology to sinter (spray) PTFE on the metal surface of the instrument sensor to isolate it from the metal of the measured medium. Avoid corrosion, so as to achieve the purpose of anti-corrosion of the instrument. The company mainly produces anti-corrosion liquid level instruments. The products have novel structure, various forms and strong corrosion resistance. They have been used by many large and medium-sized enterprises and joint ventures to replace imported similar products. It is widely used in fluorine chemical, chlor-alkali chemical, pesticide, pharmaceutical, daily chemical and other industries, and is now a high-tech enterprise in Shandong Province.