[Berry] Double Walled Glass Mug

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Borosilicate glass compared with ordinary glass : 

• no toxic side effects
• mechanical properties
• thermal stability
• alkali resistance
• acid resistance
• good fire resistance
• high physical strength

Customization - glass :

• Colour glass available for inner and outer glass
• Colour spray available for outer glass
• PVD colour available for inner and outer glass
• Twisted / ribbed glass available for inner and outer glass

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