Borosilicate glass contains boron trioxide, which has a very low coefficient of thermal expansion. This means it will not break under extreme temperature changes like ordinary glass. Its durability makes it the glass of choice for high-end restaurants, laboratories and breweries.
Borosilicate glass is composed of about 15% boron trioxide, a magical ingredient that completely changes the behaviour of the glass and makes it resistant to thermal shock. This allows the glass to resist extreme temperature changes and is measured by the "coefficient of thermal expansion", which is the rate at which the glass expands when exposed to heat. This allows borosilicate glass to go straight from the refrigerator to the oven rack without breaking. For you, this means you can pour boiling hot water into borosilicate glass and not worry about the glass breaking or cracking if you want to make tea or coffee.
Characteristic:
-The instant bearing of temperature range: -20-150 centigrade.
-The simple yet elegant design keeps your coffee or tea piping hot and cool to the touch, which is an essential feature of a coffee glass.
-Although double-crusted, they are lightweight, and because of the double crust, won't burn any table surfaces, no need for coasters.
-The cup is easy to hold, and oil stains or fingerprints are easy to clean: use common dishcloths, dish brushes, etc., and dip in dishwashing detergent to easily remove the stains.
-The glass will not become cloudy over time.
OEM&ODM:Acceptable
Manufacturing Technique: Hand Blow, High Borosilicate Glass
Sample Time is around 3-5 working days; Bulk Time is around 8-30 working days. (according to the quantity)
Size/Capacity:250ml/350ml/450ml ( make appointed size, capacity, and colour as your want )
Craft: 100% hand blown
Grade: food grade
LOGO: screen printing on glass or engraving logo
Shipping: by Air or Sea. If choose by air, it is faster if you purchase from the local market.
Packaging Details: Bubble bags + box for double wall glass tea cup (or customized packing, a variety of packaging styles are available for you to choose from)
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