Shandong Zhongwen group is founded in 1958, company has developed from prime agricultural implements factory to provincial corporation group which integrates ore mine exploitation, smelt, precision casting, metal process. Waste heat generation, cement additive, machinery production and international trade. Our company is the only one in China which has the industrial chain from ore directly to product. Corporation is located in Qingzhou, a famous historic and cultural city. Corporation occupies area 1300mu, construction area is 100000 m2, there are 1500 work staff, of which 56 people have medium professional title, and 8 are senior engineers. Leading products are: iron ore, precision castings, construction machinery, mixing station, QTZ series tower crane, concrete delivery pump. Precision castings are sold to Singapore, Taiwan and U.S.A; machinery products are sold to brazil, India, Bengal and Vietnam. Corporation has been successively awarded as Weifang private enterprises, top 100 Weifang best bank credit enterprise, Shandong province construction industry enterprises top ten, Shandong province large-size backbone enterprise and China famous brand.