Heat Toughening Creates Several Stress Points On The Glass

As more and more people are looking for eco-friendly glasses, more and more sunglasses manufacturers now offer a new range of sunglasses that are Ray Ban Wayfarer made of environmentally friendly materials.

Heat toughening creates several stress points on the glass, allowing the glass to crumble into small, grainy pieces when broken, which are safer than breaking the glass into sharp, jagged shards.

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