Explore our high-performance vacuum-insulated thermal cold water bottles, engineered for optimal temperature retention, leak-proof reliability, and enterprise customization.
Wuyi Dongyi Dailysupplies Co., Ltd., located in Wuyi County, Zhejiang Province, China, stands as a premiere global enterprise specializing in the research, development, metallurgical engineering, and automated production of high-performance food-grade stainless steel insulated drinkware.
Our core competence centers on single-wall and double-wall vacuum insulated cold water bottles, ergonomic handled tumblers, cola-shaped sports flasks, and large-capacity outdoor ice hydration containers. By integrating precision deep-drawing metal processing, automated copper-plating vacuum degassing technology, and rigorous QA protocol enforcement, we deliver market-leading hydration solutions designed to exceed the dynamic expectations of global brands, importers, and retail chains across North America, Europe, South America, the Middle East, and Asia-Pacific.
Achieving superior thermal isolation for cold liquid preservation requires eliminating all three modes of thermal energy transfer: Conduction, Convection, and Radiation. Premium cold water bottles engineered by Wuyi Dongyi rely on advanced double-wall vacuum architecture paired with micro-thin metallurgical copper barrier plating.
We extract air from between the inner and outer stainless steel shells under extreme heat (up to 600°C vacuum ovens) to achieve a near-absolute vacuum ($10^{-2}$ to $10^{-3}$ Pa), preventing molecular heat conduction and convection.
An ultra-thin inner copper reflective plating layer is applied to the exterior of the inner wall via electrolysis. This mirror-like barrier reflects thermal infrared radiation back out, ensuring iced liquids remain cold for up to 24-36 hours.
Our standard products utilize premium Food-Grade 18/8 (SUS304) Stainless Steel for non-reactive, rust-free durability. For high-salinity or acidic sports drinks, optional SUS316 marine-grade inner liners offer maximum chemical corrosion resistance.
Lid assemblies incorporate food-grade silicone gaskets and multi-thread compression latches engineered to prevent condensation escape and atmospheric temperature infiltration, guaranteeing 100% leak-proof security.
| Container Architecture | Material Specification | Cold Retention (Ice at 0°C) | Condensation Sweating | Durability / Impact Resistance |
|---|---|---|---|---|
| Double-Wall Vacuum Insulated (Wuyi Dongyi) | 18/8 (304) / 316 Stainless Steel + Copper Layer | 24 - 36 Hours (< 10°C) | Zero Condensation (100% Sweat-Proof) | Extreme (High-Impact Drop Tested) |
| Single-Wall Stainless Steel | 18/8 (304) Stainless Steel | 1 - 2 Hours | High Surface Sweating | High Impact Resistance |
| Double-Wall Plastic (Tritan/SAN) | BPA-Free Polycarbonate / Co-polyester | 3 - 4 Hours | Moderate Condensation | Medium (Prone to cracking upon severe impact) |
| Borosilicate Glass Sleeve | High-Borosilicate Glass + Silicone Boot | 2 - 3 Hours | High Condensation | Fragile / Low Impact Resistance |
Global enterprise buyers choose Wuyi Dongyi not only for product design excellence, but because of our strategic positioning within Wuyi County, Zhejiang—the world's capital of stainless steel drinkware manufacturing. This dense industrial cluster delivers unbeatable economies of scale, technological vertical integration, and agile lead times.
Direct proximity to tier-1 steel mills ensures continuous access to high-grade certified 304 and 316 stainless steel coils at optimized raw material costs, insulating clients from market volatility.
Our facility features automated robotic laser welding, hydraulic stretch forming lines, automated powder coating, and laser etching machines, achieving structural consistency with minimal margin of error.
In-house tooling mold workshops allow us to produce 3D prototype samples within 3-5 days and complete new functional lid/body structural molds in under 20 days, speeding up product development timelines.
From durable electrostatic powder coatings, matte rubber paint, and water transfer gradient patterns to high-definition 3D UV digital printing, all finishing processes are completed in-house under strict environmental standard oversight.
Whether you are an established international beverage brand, an Amazon top-seller, an outdoor gear brand, or a corporate procurement director seeking custom promotional drinkware, Wuyi Dongyi provides complete end-to-end customization support.
We offer exact color reproduction utilizing customized powder paints, rubberized coatings, metallic anodizing, and electrophoretic finishes matched precisely to your brand's Pantone standards.
Multiple logo integration techniques including precision fiber laser engraving, silkscreen printing, heat transfer printing, 3D embossed logo stamping, and UV full-wrap graphic application.
Custom lid designs: straw lids with integrated silicone spouts, 2-in-1 sip & chug dual-opening lids, leak-proof flip caps, magnetic cap retention systems, and heavy-duty TPU handles.
Fully customized retail packaging options, including FSC-certified eco-friendly craft boxes, color gift boxes with foil stamping, matte-finished cylinder tubes, and protective drop-test retail display cartons.
Consumer health and material safety are non-negotiable. Every cold water bottle and insulated tumbler manufactured by Wuyi Dongyi strictly complies with international food-contact laws and environmental regulations. Our quality management framework operates under certified ISO 9001:2015 guidelines.
Tested and verified compliant with US FDA food contact specifications, guaranteeing zero toxic leaching, zero heavy metals, and 100% BPA/BPS-free material safety.
Strict adherence to European LFGB sensory and chemical migration standards, as well as SVHC (Substances of Very High Concern) screening under EU REACH regulations.
Our vacuum sealing methodology uses advanced lead-free solder glass beads instead of traditional lead pellets, ensuring 100% compliance with CA Prop 65 safety limits.
Our manufacturing facility undergoes annual independent third-party audits (BSCI / SMETA) for ethical labor practices, workplace safety, environmental management, and fair wages.
The global market for reusable stainless steel cold water bottles and insulated drinkware is expanding rapidly, driven by shifting environmental awareness, wellness lifestyles, and fashion-conscious consumer trends.
Global municipal plastic bottle bans and ESG corporate mandates are accelerating consumer adoption of durable stainless steel hydration containers. A single 40oz stainless steel tumbler can eliminate upwards of 1,400 single-use plastic water bottles annually.
Market demand has shifted significantly toward 30oz and 40oz car-cup-holder-compatible tumblers equipped with ergonomic handles and straw lids. Consumers seek high volume without sacrificing mobility or vehicle integration.
Water bottles have evolved from functional outdoor gear into essential fashion statements. Seasonal pastel color palettes, gradient powder coats, and co-branded artistic graphics drive repeat purchases and viral social media engagement.
Our diverse range of cold water bottles and vacuum insulated tumblers are engineered for optimal utility across a broad spectrum of consumer lifestyle scenarios:
Sleek skinny tumblers and high-flow sports bottles designed for gym goers, cross-fit athletes, and runners requiring rapid cold hydration during intensive workouts.
Rugged 48oz and 64oz extra-large vacuum flasks designed for camping, hiking, and overlanding, engineered to keep ice intact even in scorching desert conditions.
Tapered base 30oz and 40oz quencher tumblers engineered specifically to fit standard automotive cup holders, providing effortless sip-access during long road trips.
Premium custom laser-etched tumblers utilized by Fortune 500 corporations for employee onboarding gifts, executive giveaways, and promotional events.
We ensure transparent, efficient, and quality-controlled manufacturing execution from initial inquiry to final international freight shipment.
Submit your specific product volume, surface coating preferences, logo artwork, and estimated order quantity to our sales engineering team.
Receive a detailed commercial quotation alongside technical specification sheets and customized packaging breakdowns within 24 hours.
We create precision pre-production physical samples featuring your custom pantone colors and logo placement for final sign-off.
Upon sample approval, mass production begins utilizing automated deep-drawing, vacuum furnace degassing, and robotic surface finishing.
Every bottle undergoes structural vacuum insulation testing (thermal camera inspection), hydrostatic leak tests, and visual coating quality audits.
Products are packaged in export-grade cartons and shipped via FOB, CIF, or DDP logistics with comprehensive after-sales guarantee support.
Relying on advanced manufacturing concepts and complete quality assurance, our stainless steel cold water bottles sell successfully worldwide. Wuyi Dongyi has built long-term strategic relationships with brand owners, wholesalers, and retail distributors across major global markets.
Find definitive answers regarding technical specifications, minimum order quantities, compliance, and custom production.
Our standard MOQ for custom color coating and custom logo branding is typically 1,000 units per style/color. For standard inventory models without custom surface treatment, smaller trial orders starting at 500 units can be accommodated.
Every bottle undergoes a two-stage 100% thermal testing process. Following degassing, bottles pass through automated infrared thermal imaging sensors. Items failing to meet temperature differential thresholds are automatically rejected from the assembly line.
Yes, absolutely. All metal components are fabricated from certified food-grade SUS304 (18/8) or SUS316 stainless steel. Lids and straws are molded from 100% virgin BPA-free polypropylene (PP), Tritan, or food-grade silicone, meeting FDA and LFGB standards.
Sample production takes 3 to 7 business days depending on customization complexity. Mass production typically requires 25 to 35 days after sample approval and deposit confirmation.
Yes! Our experienced R&D engineering team specializes in ODM lid design, including 3D CAD modeling, rapid prototype 3D printing, and custom injection mold creation to turn unique product concepts into reality.
For high-durability and commercial dishwasher resistance, we recommend our premium electrostatic powder coating or hard anodized finishes, which resist peeling and scratching far better than standard spray paints.
Browse our extended lineup of wholesale insulated flasks, outdoor water jugs, and stylish skinny tumblers available for immediate OEM/ODM order placement.
Dongyi
