Punching dies are used in various brands of CNC bending machines. High quality integral quenching process to ensure the durability of the mold. We provide punching mold design, we only need the customer to provide the rendering of the workpiece after bending, we can design and produce.
What's the history of alloys?
The first people in the world to make alloys were the babylonians,
who began refining bronze (an alloy of copper and tin) 6,000 years ago.
China is also one of the earliest countries in the world to study and produce alloys.
The bronze (copper-tin alloy) technology was very developed in the shang dynasty (more than 3,000 years ago).
Around the 6th century BC (late spring and autumn period) the sword.