Tianrun Industrial Technology Co., Ltd. (Tianrun industry) is located at No. 2-13, Tianrun Road, Wendeng District, Weihai City, Shandong Province. It mainly produces "Tian" brand internal combustion engine crankshafts and connecting rods. Its business covers internal combustion engine power parts (crankshafts, connecting rods, castings and forgings), tooling and die manufacturing, automatic and intelligent equipment Large comprehensive industrial groups such as vehicle air suspension.

Tianrun Industrial Technology Co., Ltd. is the largest professional manufacturer of crankshaft and connecting rod in China with the production of "Tian" brand internal combustion engine crankshaft as the leading product. At present, it has more than 3600 employees, more than 800 professional and technical talents, and a total asset of 8.132 billion yuan.

The company's business involves the development of internal combustion engine power parts, railway equipment and machine tool equipment, tooling and mold manufacturing, automatic and intelligent equipment, commercial vehicle air suspension and other fields.