Explore our flagship double-walled food-grade stainless steel tumblers, flasks, and sports hydration lines engineered for global brands and commercial importers.
Macroeconomic shifts toward eco-conscious consumption, single-use plastic mandates, and athletic lifestyle adoption are reshaping global OEM/ODM manufacturing standards.
The global reusable water bottle market, valued at USD 8.92 Billion in 2023, is projected to expand at a compound annual growth rate (CAGR) of 4.4% through 2030. High-performance stainless steel sports bottles represent the fastest-growing sub-segment, fueled by international consumer demand for thermal efficiency, chemical inertia, and mechanical durability in extreme athletic contexts.
Strict legislative frameworks—such as the European Union’s Single-Use Plastics Directive and stringent FDA / LFGB food contact standards—have compelled retail brands to eliminate bisphenol compounds (BPA, BPS) and phthalates. Stainless steel 18/8 (SUS304) and medical-grade 316 (SUS316) alloys have emerged as the definitive material baseline for enterprise procurement.
Situated in Zhejiang Province, China, Wuyi County stands as the epicenter of global hardware vacuum flask manufacturing. The region consolidates deep raw material supply chains, automated hydroforming infrastructure, precision vacuum extraction techniques, and advanced surface finish technologies into a concentrated, highly cost-efficient ecosystem.
Located in the heart of Wuyi County, Zhejiang Province, Wuyi Dongyi Dailysupplies Co., Ltd is an integrated high-tech enterprise specializing in the research, engineering, design, and high-volume manufacturing of premium food-grade stainless steel drinkware.
Our expansive production catalog encompasses double-walled vacuum insulated tumblers, sports bottles, travel mugs, outdoor hydrators, and single-walled light-weight fitness containers. Driven by an uncompromising principle of "Quality First, Service First," we serve tier-one retail importers, corporate brands, and e-commerce leaders across North America, Europe, South America, the Middle East, and Southeast Asia.
Our facility houses state-of-the-art metal hydroforming presses, automated laser welding robotics, multi-stage vacuum degassing chambers, and strict non-destructive quality testing stations. Supported by an experienced in-house R&D engineering team, we deliver end-to-end OEM and ODM customization—from initial industrial CAD design to custom functional lid molding and specialized eco-friendly powder coatings.
Understanding the metallurgical, thermal, and mechanical specifications that distinguish commercial-grade sports bottles from mass-market alternatives.
| Performance Specification | Standard Commercial Grade | Dongyi Industrial OEM Standard | Benefit for Brand / Importer |
|---|---|---|---|
| Raw Material (Inner Shell) | SUS201 / Low-grade 304 Alloys | Austenitic SUS304 (18/8) or SUS316 | Zero metallic taste transfer, maximum corrosion resistance against acidic beverages. |
| Vacuum Level Degree | 10⁻¹ Pa to 10⁻² Pa | High Vacuum System (< 10⁻³ Pa) | Superior heat barrier; hot contents stay hot >12h, cold beverages chilled >24h. |
| Thermal Reflective Coating | None / Single Layer Paint | Internal Copper Plating Layer | Blocks thermal infrared radiation across double walls, boosting thermal retention by 18-25%. |
| Inner Surface Finish | Standard Mechanical Polish | Electrolytic Precision Polishing | Micro-smooth wall prevents bacterial buildup, tea staining, and odor retention; easy cleaning. |
| External Coating Durability | Basic Spray Liquid Painting | Tough Powder Coating / UV 3D Print | Chip-resistant, sweat-proof grip, dishwasher-safe finish designed for rugged outdoor activity. |
| Sealing Gasket Material | Standard Recycled Silicone | 100% Virgin Food-Grade LFGB Silicone | Zero degradation over time, leak-proof performance under extreme barometric pressure changes. |
Heat transfer occurs through conduction, convection, and radiation. Our state-of-the-art evacuation chambers strip ambient air molecules between the inner and outer stainless steel shells down to an ultra-low vacuum state. This completely halts conductive and convective energy loss.
To neutralize thermal radiation transfer, Wuyi Dongyi applies an ultra-thin reflective copper layer around the outside of the inner stainless vessel. Radiant heat waves bounce off the copper coating back into the liquid core, maintaining internal kinetic temperature stability.
Utilizing high-pressure hydraulic metal forming, our bottle bodies maintain precise wall thickness distribution. This eliminates micro-cracks and structural weaknesses, ensuring structural survivability during high-impact outdoor drops or physical compression.
Modern sports and daily movement demand specialized vessel ergonomics, lid mechanisms, and capacity variations tailored to distinct user environments.
Recommended Configuration: 40oz, 48oz, and 64oz Heavy-Duty Vacuum Flasks with dual-purpose carry handles, wide mouth openings for ice cubes, and high-impact rubberized powder coatings.
Engineered for high-altitude trekking, camping, and wilderness survival where reliable 24-hour hydration temperature control and structural durability under rugged conditions are non-negotiable.
Recommended Configuration: 20oz to 32oz Ergonomic Sports Bottles with auto-flip push-button spouts, silicone straws, single-hand operating triggers, and quick-flow air valves.
Optimized for rapid fluid delivery during intensive CrossFit workouts, marathon training, indoor cycling, and gym routines requiring zero liquid disruption and complete leak protection.
Recommended Configuration: 20oz Skinny Tumblers & 30oz Tapered Travel Mugs with vehicle cup-holder compatible bases, clear multi-drinking lids, and stylish aesthetic matte finishes.
Tailored for daily professional urban movement, highway driving, and desk coffee/water consumption, combining sophisticated visual appeal with practical drip-free portability.
We empower international importers, retail distributors, and private labels to take custom drinkware concepts from initial technical drafting to global retail shelves.
Choose from electrostatic powder coating, soft-touch rubberized paint, high-gloss metallic electroplating, thermal gradient transfers, and full-wrap 3D UV digital printing with customized Pantone color matching.
Our rapid prototyping facility produces SLA 3D physical models within 48 hours. Our tooling technicians construct customized steel injection molds for proprietary lid mechanisms, handles, and vessel shapes.
Precision fiber laser engraving, silk-screen silk printing, water transfer decals, and custom eco-conscious packaging (FSC craft boxes, cylinder gift tubes, retail display units) tailored to brand identity.
Send project specifications, target quantities, and customized artwork via email or online request form.
Receive detailed transparent cost analysis, tooling timeline, and material breakdown from our team.
Obtain technical CAD drawings and physical pre-production sample prototypes for lab verification.
Automated hydroforming, dual-stage vacuum baking, laser welding, and automated surface painting.
100% thermal isolation testing, leak-proof pressure testing, and chemical coating adhesion checks.
Secure freight packaging, export customs documentation clearance, and prompt global delivery fulfillment.
Wuyi Dongyi Dailysupplies actively drives tech innovation in smart thermal monitoring, circular material usage, and eco-friendly manufacturing.
The convergence of smart electronics and vacuum drinkware is accelerating. Next-generation sports bottles incorporate low-energy LED touch displays on lids for real-time liquid temperature readout, UV-C sterilization LEDs integrated into cap interiors for wilderness water purification, and Bluetooth hydration tracking syncable with athletic mobile apps.
In response to international carbon-neutral mandates, Dongyi is advancing the utilization of certified PCR 304 stainless steel alloys. Utilizing up to 90% recycled metal scrap in inner and outer bottle shells drastically reduces carbon emissions per unit during smelting, aligning brand partners with global Scope 3 ESG target metrics.
Addressing core technical, regulatory, manufacturing, and supply chain queries to support your OEM/ODM decision-making process.
Wuyi Dongyi Dailysupplies Co., Ltd is located in Wuyi County, Zhejiang Province—the central hub of China's vacuum flask manufacturing industry. We provide enterprise-grade production capacity, advanced automated vacuum degassing technology, rigorous quality testing, direct factory-floor pricing, and comprehensive OEM/ODM custom tooling support with complete food safety certification compliance (FDA, LFGB, REACH).
18/8 Stainless Steel (SUS304) contains 18% Chromium and 8% Nickel, offering exceptional structural strength, rust resistance, and thermal insulation capabilities suitable for 95% of beverage applications. SUS316 contains added Molybdenum (2-3%), delivering enhanced resistance against highly acidic liquids, saline solutions, and aggressive carbonated drinks, making it ideal for specialized medical or high-salinity sports environment products.
Every single insulated vessel undergoes a two-stage 100% automated thermal check during mass production. Bottles pass through infrared thermal imaging heat sensors before and after surface coating. Any vessel exhibiting thermal leakage or vacuum failure is automatically ejected from the assembly line. Our thermal rejection rate consistently operates below 0.3%.
Our baseline MOQ for custom powder-coated colors, custom logo prints, and standard packaging ranges between 1,000 to 3,000 units depending on vessel capacity. Custom proprietary shape molds require an initial tooling development timeline of 20–30 days. Standard mass production turnaround is approximately 30 to 40 days following pre-production sample sign-off.
Yes. All raw plastic resins (Tritan, PP, AS) and sealing silicone gaskets utilized by Wuyi Dongyi are 100% virgin food-grade materials. They are rigorously tested and certified to comply with US FDA 21 CFR 175.300 standards, European Union LFGB regulations, and California Proposition 65 requirements.
Absolutly. Our in-house R&D team specializes in custom lid engineering. We produce multi-functional lids including 2-in-1 straw and chug lids, heavy-duty outdoor handles, flip-top spouts with push-button safety locks, and magnetic cap retainers tailored to your brand's functional specifications.
Discover our top-rated wholesale insulated water vessels, skinny tumblers, outdoor flasks, and ice buckets popular across international markets.
Partner directly with Wuyi Dongyi Dailysupplies Co., Ltd. for reliable factory-direct manufacturing, custom OEM/ODM tooling, competitive volume pricing, and uncompromising food-grade quality standards.
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