The 20 station toughening machine makes permanent stress on the surface of glass parts to ensure the mechanical strength of products.
![ad1[2015-01-13 17:58:31]](/Upload/1523325484.jpg "ad1[2015-01-13 17:58:31]")
![ad2[2015-01-13 17:58:31]](/Upload/1523325322.jpg "ad2[2015-01-13 17:58:31]")
![ad3[2015-01-13 17:58:31]](/Upload/1523325406.jpg "ad3[2015-01-13 17:58:31]")
