Double Wall Glass Cup Thermal Insulated Glass Heat Resistant Espresso Coffee Cup

Double Wall Glass Cup Thermal Insulated Glass Heat Resistant Espresso Coffee Cup. High Borosilicate Glass: Made of high borosilicate glass with a linear thermal expansion coefficient of 3.3. Professional Manufacturer: Specialized in glassware manufacturing for over 15 years with own R&D teams. Global Certification: Certified by ISO9001, BSCI, SGS, FDA, LFGB, ROHS, and REACH standards. OEM & ODM Service: Provides customized OEM and ODM services for famous brands worldwide. High Production Capacity: Daily production of 10,000 pcs and annual output of 3,000,000 pcs. Fast Delivery: Stocked items delivered within 7 days; customized items within 15-30 days. Eco-Friendly Design: Adheres to healthy, environmental protection, and fashion design concepts.