About usTianyuan Glass:Huailai Tianyuan Special Type Glass Co.,Ltd. was established on October 9th, 2002,which is the national high technology Enterprise specializes in the research and development, production and sales of colored borosilicate 3.3 glass tubing and rods.The registered capital is 36.8 million yuan, Total assets exceed 450 million yuan. Presently we have more than 8 hundreds employees.Features:Material:High borosilicate glass ISO approvedBearing temperature: -20℃ to 150 ℃ （-4 ℉ to 302 ℉ ）The double wall is made of mouth-blown borosilicate glass known for its amazing insulating qualitiesb without burning fingers and messy condensation, making them the ideal vessels for every beverage.This glassware is dishwasher and microwave safe, they also hand wash up beautifully.At the bottom of these glasses you'll find a small spot. This is to ensure there is a balanced pressure between the two layers of glass. Won't scratch, condensate or become cloudy.Compared to ordinary glass, borosilicate glass is superior to the former in terms of thermal properties, optical properties, mechanical properties and chemical properties, and has a lower thermal expansion coefficient than ordinary glass.And also has a high thermal shock and surface hardness whitch can prevent scratches, and can be applied to fire-proof, bullet-proof glass.Some customers receive the product, they will think why it is so thin and light, if the quality is terrible?In fact, normally,borosilicate glass products are thinner than ordinary glass products. This is just its feature, but never mind, it is more resistant to low temperature and high temperature. Kettle and cup products can be taken out from the refrigerator and poured directly into hot boiling water without breaking.Please trust the borosilicate.
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