Recently, the second phase of the 4 million-ton pelletizing project at Tosyali in Algeria, contracted by Sinosteel International, successfully receive

Coal mining is a crucial source of energy supply in China, and the requirements for transformers in coal mines are exceptionally high. These transform

Before the 1960s, dry-type transformers mainly used B-class insulation in open-ventilated designs, with the product model designated as SG. At that ti