march, 1954- established lvjiazhen iron industry producer’s cooperative. december, 1954-renamed as lvjiaji united agriculture and iron industry producer’s cooperative committee. february, 1956-renamed as united agriculture and iron industry producer’s cooperative. january, 1957-renamed as wendeng iron industry maintenance producer’s cooperative. april, 1958-renamed as wendeng cooperative united factory. july, 1958-renamed as wendeng machinery farm tools maintenance factory. february, 1960-renamed as wendeng tractor maintenance factory. april, 1970-renamed as agricultural machinery repair and manufacture factory. january, 1982-renamed as shandong wendeng crankshaft factory. december, 1993-renamed as shandong crankshaft general plant. december, 1995-renamed as wendeng tianrun crankshaft co., ltd. 1999- renamed as tianrun crankshaft co., ltd. november, 2007-established tianrun crankshaft co., ltd. august 21st, 2009 - went public in shenzhen a stock exchange |
