What makes borosilicate glass different from regular glass?
Borosilicate glass contains boron trioxide, which gives it a much lower thermal expansion coefficient. This means it can withstand extreme temperature changes (from freezer to oven) without cracking — regular tempered glass cannot.
Can I put these containers directly from freezer to oven?
Yes! Our borosilicate glass containers can go from -20°C freezer directly to a 400°C oven. The gradual thermal shock resistance is what makes borosilicate glass superior for kitchen use.
What certifications do your products have?
All GraceBoro products carry ISO 9001 certification. Products for specific markets meet additional standards: FDA compliance for the US, LFGB for Europe, and relevant local food-safety regulations for other markets.
Can I order custom sizes and shapes?
Absolutely. Our OEM/ODM service allows you to specify exact dimensions, compartment layouts, lid designs, and packaging. We work with you from concept through production to delivery.
