Import 250ml Double Wall Glass — Buy in Bulk from Supplier in China

Huayue Glassware Ltd manufactures this 250ml double wall glass using borosilicate glass, a material chosen for its low thermal expansion coefficient and resistance to thermal shock. The double wall construction creates a sealed air gap between inner and outer vessels, reducing heat transfer by conduction and convection to maintain beverage temperature. The 250ml capacity corresponds to a standard espresso doppio, tea serving, or cold brew portion in foodservice settings. The inner and outer walls are joined at the rim through a proprietary or standard glassblowing process, with the sealed cavity preventing condensation on the exterior surface during cold beverage service. This construction eliminates the need for coasters and protects tabletops from water rings in cafe and restaurant environments.

Borosilicate glass composition typically contains 12-15% boron oxide alongside silica and alumina, yielding a linear expansion coefficient of approximately 3.3 x 10^-6 K^-1 (standard for this material grade). This thermal property allows the glass to withstand temperature differentials of 150°C or more without fracture, supporting microwave reheating applications as referenced in the source description. The wall thickness for double wall borosilicate drinkware typically ranges from 1.0-1.5mm per wall, with total assembled weight of 120-180g for a 250ml piece. The optical clarity of borosilicate glass provides the visual floating effect that distinguishes double wall designs from single-wall alternatives. Surface treatments, if any, such as interior frosting or exterior sandblasting, are not specified and require supplier confirmation.

Primary applications span specialty coffee shops, tea houses, hotel food and beverage operations, and corporate catering where presentation value supports premium pricing. The 250ml format serves espresso-based drinks, single-serve tea, craft cocktails, and dessert presentations. Huayue Glassware Ltd holds imported supplier tier status with harbour trust tier verification, though response metrics show zero recorded engagement. Microwave safety claims require validation against the supplier's specific test data and applicable standards. Trade terms, MOQ, lead times, and exact pricing are absent from the listing and must be negotiated directly. Packaging for borosilicate glassware export typically employs individual polybag insertion, corrugated divisions, and master carton construction, but Huayue's specific protective protocol needs confirmation.

Huayue Glassware Ltd operates from China as an imported-tier supplier within the harbour trust tier, indicating basic marketplace verification without premium accreditation. The company's location in China places it within the global centre for borosilicate glassware manufacturing, with access to raw material suppliers in Shandong and Hebei provinces and established export logistics infrastructure through Shanghai, Ningbo, or Qingdao ports. No founding year, registered capital, factory floor area, employee count, or annual turnover is disclosed in the available profile. The zero percent response rate and absence of average response time data suggest limited platform engagement or inactive account management.

The supplier's product focus appears to be double wall borosilicate drinkware for foodservice and retail channels, though the full product catalogue is not specified. The source description references verified supplier status and export-quality products, but no third-party audit results, BSCI or SMETA social compliance reports, or environmental certifications are mentioned. Buyers should request a current business licence, VAT registration certificate, and factory audit report to assess operational legitimacy. The lack of disclosed major client references or export market history means that reference checks with existing customers should form part of due diligence. Quality management system certification, if any, is not stated and should be confirmed directly.