On 25th January, Tsingtuo Group successfully run its seven-stand tandem cold rolling mill, which means that the world first seven-stand tandem cold rolling mill has officially put into operation. This project adopted the new generation of laser welding technology, and combined with small diameter four-high rolling mill as well as six-high rolling mill. The diameter

Why the sanction of American did not stop Venezuela exporting oil to China? For major economies, oil is an important strategic resource, and plays an important role in industrial development. It once has been called "the blood of industry". When speaking of oil, most of us will come up with Saudi Arabia, because there are