Double-Walled Glass Cup

Material: Made of 3.3 high borosilicate glass (food grade, lead-free and non-toxic), with a low coefficient of thermal expansion and the ability to withstand instantaneous temperature differences from -20 ℃ to 150 ℃. It is not easy to explode due to alternating cold and hot temperatures; High transparency, allowing clear visibility of tea soup and coffee layers.
Structure and process: Double layer hollow design, manually blown or mechanically precision processed, leaving insulation chambers between the inner and outer layers, and often with small exhaust holes at the bottom (balanced pressure crack prevention); Egg shaped/goose egg shaped curves are smooth and rounded, balancing grip and visual aesthetics; Some high-end models will have thickened cup bottoms to enhance stability.
Accessories: Commonly paired with 304/316 stainless steel tea separators and silicone/pure titanium sealing covers to achieve tea separation, leak prevention, and portability.
Core strengths
Thermal insulation and anti scalding: The hollow layer blocks heat conduction, and the outer wall of the cup when filled with boiling water is not too hot to touch; Cold drinks can also reduce condensation water from wetting the tabletop.
Healthy and durable: high borosilicate is resistant to acid and alkali corrosion, does not absorb tea stains or odors, and is easy to clean; Compared to ordinary glass, it is more impact resistant and has a longer service life.
Strong ornamental value: The fully transparent cup body allows for clear viewing of the tea leaves spreading and the gradient of layered drinks, making tea and coffee more ceremonial; The egg shaped design is simple and elegant, suitable for various home and office scenarios.