· matri universal thread grinding machine. Matrix is a world renowned company which was founded in 1913 and started making thread grinding machines in 1934, and since this time has remained the worlds market leader in the manufacture of both external and internal thread grinding machines. 2017 sees the reintroduction of Gear GrindingMetalloobrabotka 2017, Moscow, Russia.
![whatsapp](/images/whatsapp.png)