The world is filled with nearer to 8 billion people. Among those half of the people have their mobile phones in their hands. And year passing the smartphone users are also rising day by day. Every mobile, even it is normal or a smartphone it costs above a thousand in cost. So to protect the mobile we used to cover a tempered gorilla glass for the screen protection. If the phone falls by mistake the tempered glass will protect the inner screen of the phone.
The first tempered glass was introduced in the year 1968 by Schlegel. First, it is …
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