250ml Heat Resistant Coffee Mug Double Wall Glass Cup Insulated Glass Mug for Drinking

250ml Heat Resistant Coffee Mug Double Wall Glass Cup Insulated Glass Mug for Drinking. High Borosilicate Glass: Made of high borosilicate glass with a linear thermal expansion coefficient of 3.3. Certified Safety Standards: Complies with FDA, LFGB, Japanese food grade, ROHS, and REACH standards. Custom Design Support: We welcome customized designs, sizes, and packaging for your unique needs. OEM Service Available: Professional OEM services ensure specific requirements are met. Trusted Manufacturer: Over 10 years of experience with ISO9001, BSCI, and SGS certifications. High Daily Capacity: Production capacity of 10,000 PCS daily and 3,000,000 PCS annually. Global Export Experience: Products exported to Korea, Japan, Singapore, UK, Germany, Canada, and US.