In 1991, TongYu was officially founded as a forging and casting fitting manufacturer. That's a start of our business in forging industry. On March 8th, 2011, TongYu was listed on the GEM (Growth Enterprises Market) on Shenzhen Stock Exchange.
TongYu was built up with professional R&D team as well as comprehensive production lines, which include smelting, casting, ESR (Electroslag remelting), forging, and heat treatment lines. Apart from producing industrial casting and forging parts, TongYu also provides large equipment sets.
Now, TongYu has become a large modern enterprise engaged in the business of heavy duty equipment, energy, mining industry investment, and modern logistics.
Shandong Yucheng General Machinery Factory was created.
We were restructured to a joint-stock company, and renamed as Shandong Group Co., Ltd. The same year, we passed ISO9001 certificate.
We founded 2 wholly-owned subsidiaries, respectively Yucheng Tongyu New Energy Machanical Casting Ltd., and Yucheng Tongyu Renewable Resources Ltd.
TongYu passed the ISO14001 environmental management system certificate and the OHSAS18001 occupational health and safety management system certificate.
In March, TongYu was renamed to TongYu Heavy Industry Co., Ltd.
We were listed on the GEM (Growth Enterprises Market) on Shenzhen Stock Exchange. Since October, we continuously received the IACS certificate in succession from China, France, Norway, UK, Germany, USA, Japan, and South Korea.
In December, TongYu purchased Changzhou Jin'an Metallurgical Equipment Co., Ltd., and Changzhou Jinan Roll Manufacturing Co., Ltd.
February: we got the ASME MO certificate
March: TongYu hold the shares of Changzhou Huatian Metallurgical Equipment Co., Ltd, and Changzhou Haijie Metallurgical Machinery Manufacturing Co., Ltd. through Changzhou Jin'an Metallurgical Equipment Co., Ltd.
September: TongYu was certified by GJB
October: our wholly-owned subsidiary, Yucheng Tongyu Mining Investment Co., Ltd. was founded.
March: we established 2 wholly-owned subsidiaries, Guizhou Baofeng New Energy Development Co., Ltd. and Qingdao Baojian Technology Engineering Co., Ltd.
April: TongYu got the Weapon Equipment Quality System Certification
July: we bought Jinan Institute of Metallurgical Science.
November: we registered a wholly-owned subsidiary Qingdao Bortome Import & Export Co., Ltd.in Qingdao.
March: we founded a wholly-owned subsidiary: Yucheng Baoli casting Ltd.
April: our wholly-owned subsidiary Hong Kong Tongyu International Trading Co., Limited was established.
September: Jiangsu Haijie Aviation Equipment Technology Co., Ltd was established was our wholly-owned subsidiary.