Speaking of helmets have to mention the "Jedi survival" this mobile game, which has a sublime defensive equipment - three levels of head, can be called the strongest protective helmet in the game, can defend a large part of the gun shot, so it is loved by players. The helmet was not invent
In the daily communication of the factory, many people are accustomed to using the term "surface finish". However, "surface finish" is proposed from the human visual point of view, in order to align with the international standard (ISO), the national standard has no longer used t
Titanium alloy plate is a commonly used metal material, corrosion resistance, high specific strength, good thermal stability and other characteristics, is widely used in aerospace, shipbuilding, medical equipment and other fields, titanium alloy plate is produced? Titanium alloy plate rolling is an