Tianrun Industry Technology Co., Ltd. manufactures and sells internal combustion engine crankshafts in China and internationally. Its product range includes crankshafts for passenger car, marine, and light, medium, and heavy-duty engines, as well as connecting rods, ductile iron crankshafts, cast iron pistons, camshafts, flywheels, cylinder heads, and various castings. The company also provides components for commercial vehicles, construction and agricultural machinery, new energy, robotics, hydraulics, and wind power, along with air and rubber suspension systems, gantry robots, and intelligent logistics and detection systems. It was formerly known as Tianrun Crankshaft Co., Ltd. and changed its name to Tianrun Industry Technology Co., Ltd. in April 2020. Founded in 1954, the company is headquartered in Weihai, China.