Tempered glass is about four times stronger than "ordinary," or annealed, glass. And unlike annealed glass, which can shatter into jagged shards when broken, tempered glass fractures into small, relatively harmless pieces. The oven heats the glass to a temperature of more than 600 degrees Celsius.
Tempered glass is also costly to purchase, definitely more expensive than the standard glass, but less costly than laminated glass. Depending on the preferences of a building owner, the cost is another point of difference that dictates the choice between laminated and tempered glass.
Although laminated glass is stronger than tempered glass, tempered glass is more often used in household windows and doors. Tempered glass offers strength and breakage-resistance but laminated glass provides UV-resistance, extra security, and sound proofing.
The half glass door can be a perfect office door, JHK has various glass to choose , can be vision or not clear.