Day: July 17, 2021

 1. 45-high-quality carbon structural steel, the most commonly used medium-carbon quenched and tempered steel Main features: The most commonly used medium carbon quenched and tempered...

     In this type of enterprise, the employees are tired, and the boss is even more tired. They are all working hard for the...

 Any corporate meeting should look like a lady's skirt, the shorter the better. In fact, many corporate meetings are like shrouds, long and useless, and...