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.