On the Internet, there is little sites about technical support. Welcome with interest the emergence of each new service for professionals. This time the
technology
The invention of metal
The first invented by man metal was copper. It happened approx. 5500 years BC in what is now Iran. From this moment begins the
Welding one of the most important discoveries of mankind
Welding is used for centuries, though not in the form known today. One of the first welding process was welding. He blacksmith warming up