Explore our primary export-grade vacuum insulated flasks and tumblers engineered with double-wall thermal isolation and food-safety certification.
The global beverage container industry is undergoing a structural paradigm shift toward sustainable, vacuum-insulated food-grade stainless steel hardware. Modern enterprise procurement strategies demand more than basic aesthetic shapes; they mandate rigorous metallurgical compliance, advanced thermal transfer minimization, non-reactive internal passivation, and scalable factory yield rates.
As a premier China-based manufacturer, Wuyi Dongyi Dailysupplies Co., Ltd operates at the nexus of precision manufacturing and international trade compliance. Based in Wuyi County, Zhejiang Province, our manufacturing infrastructure covers complete end-to-end processing—from raw deep-drawing of 304 (18/8) and 316 surgical-grade stainless steel coils to high-vacuum evacuation, robotic electrostatic powder coating, and automated leak-testing protocols.
Our vacuum insulated wine flasks are engineered specifically to preserve delicate vinicultural profiles—preventing oxidation, UV degradation, thermal shock, and metallic flavor transfer through advanced electro-polished inner wall passivation.
Commercial buyers across North America, Europe, South America, the Middle East, and Southeast Asia require robust OEM/ODM supply chains capable of delivering custom colorways, specialized functional lids, ergonomic forms, and compliant food-contact safety profiles.
Utilizing premium 18/8 (SUS304) and optional medical-grade 316 stainless steel, our wine flasks eliminate chemical leaching, heavy metal migration, and BPA/phthalate risks. Meets strict FDA, LFGB, and EU 10/2011 food-contact criteria.
Our dual-wall vacuum extraction technology achieves an internal vacuum pressure below 10^-4 Pa, augmented by interior copper plating to reflect infrared thermal radiation. Keeps wines at cellar temperature for up to 24 hours.
From sleek metallic electro-coating and textured matte powder coatings to 3D tactile UV printing, laser engraving, and silk-screened logos. Fully customized to enhance brand positioning in retail channels.
Precision-molded food-grade silicone gaskets coupled with BPA-free Tritan/PP lid enclosures guarantee 100% leak-proof isolation during transportation, outdoor leisure, or sport activity.
Wuyi Dongyi facilities strictly adhere to international labor and quality standards, maintaining active BSCI, ISO 9001, and corporate social responsibility (CSR) certifications for seamless import validation.
Complete architectural support from CAD modeling and 3D rapid prototyping to tooling creation, mass hydraulic pressing, vacuum annealing, and turnkey retail packaging assembly.
Comprehensive parameter analysis for procurement managers, product development directors, and OEM brand buyers.
| Engineering Parameter | Standard Technical Specification | Enterprise Customization Options |
|---|---|---|
| Primary Shell Material | Austenitic 304 (18/8) Food-Grade Stainless Steel | Medical-Grade 316 Stainless Steel (Inner Liner) |
| Vacuum Insulation Type | Double-Wall Vacuum Evacuation + Copper Radiation Layer | Single-Wall Lightweight Options for Specific Uses |
| Thermal Retention Performance | Hot: 12+ Hours (≥65°C) | Cold: 24+ Hours (≤8°C) | Enhanced Multi-Layer Vacuum Foil Shielding |
| Internal Surface Treatment | Electrolytic Passivated Polishing (Seamless Interior) | Ceramic Non-Stick Coating / Glass-Lined Finish |
| Exterior Coating Options | Electrostatic Powder Coat, Spray Paint, Rubberized Finish | Hydro-Dip Marble, 3D UV Relief, Water Transfer |
| Lid & Closure System | BPA-Free Polypropylene (PP) / Food-Grade Silicone Seal | Magnetic Spout, Straw Lid, Flip-Cap, Wine Aerator Spout |
| Capacity Range | 8oz, 12oz, 16oz, 20oz, 30oz, 32oz, 40oz, 48oz, 64oz | Custom Molded Volumes & Volumetric Laser Markings |
| Quality Certifications | FDA, LFGB, REACH, RoHS, ISO 9001:2015, BSCI | Third-Party Testing (SGS, TÜV Rheinland, Intertek) |
How Wuyi Dongyi Dailysupplies Co., Ltd transforms raw stainless steel coils into world-class vacuum wine flasks and drinkware.
High-precision automated cutting machines process SUS304 steel coils, followed by multi-stage hydraulic deep drawing and necking to form inner and outer shells.
Robotic laser welding seamlessly joins shell components. Copper foil plating is applied to the exterior of the inner flask to reflect radiant thermal energy.
Vessels undergo extreme temperature vacuum baking to evacuate inter-wall air. Electrolytic passivation neutralizes micro-pores, ensuring absolute corrosion resistance.
100% of manufactured flasks undergo temperature sensor array verification. Units failing to meet strict delta-T thermal insulation curves are immediately rejected.
Application of durable eco-friendly powder coatings, custom silk-screened or laser-engraved branding, and protective clear coats cured via infrared ovens.
Final assembly of lid seals, ergonomics testing, insertion of user documentation, eco-friendly retail box packaging, and container consolidation for shipment.
Navigating international tariffs, customs clearance, and regional product safety standards can be complex for global distributors. Wuyi Dongyi Dailysupplies Co., Ltd provides robust export management services tailored to importers across North America, Europe, South America, the Middle East, and Asia-Pacific.
Discover our specialized high-capacity outdoor travel flasks, single-layer stainless tumblers, and fashion hydration containers available for mass production.
In-depth technical and commercial inquiries regarding wine flask manufacturing, material selection, custom tooling, and bulk OEM/ODM procurement.
Elevate your product catalog with high-performance, stylish, and food-safe thermal drinkware. Contact our engineering team today for technical data sheets, wholesale price lists, and OEM project evaluations.
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