Explore our CE compliant double-wall vacuum insulated mugs, cola bottles, and travel tumblers manufactured under strict ISO quality management.
Technical baseline for B2B importers, retail brands, and OEM/ODM buyers seeking compliant thermal drinkware across European and international markets.
To achieve valid CE certification and legally distribute tea travel mugs within the European Economic Area (EEA), products must strictly comply with Regulation (EC) No 1935/2004. This standard mandates that materials coming into contact with hot liquids (such as tea steeped at temperatures up to 100°C) must not transfer their constituents into food in quantities that endanger human health, bring about an unacceptable change in the composition of the beverage, or cause deterioration in organoleptic characteristics.
Under German LFGB (Lebensmittel-, Bedarfsgegenstände- und Futtermittelgesetzbuch) § 30 & 31 requirements—which often serve as the benchmark for CE compliance—every tea travel mug manufactured at our facilities undergoes rigorous extraction tests. We measure heavy metal leaching (including Chromium, Nickel, Lead, and Manganese) using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) to guarantee zero toxic migration during prolonged exposure to acidic tannic tea acids.
Lid assemblies and seal gaskets represent a critical point of failure in thermal drinkware. CE certified travel mugs utilize 100% BPA-free Polypropylene (PP) polymers and food-grade platinum-cured silicone seals. These components undergo REACH SVHC (Substances of Very High Concern) screening, ensuring freedom from phthalates, bisphenols, and volatile organic compounds (VOCs) under high-temperature steeping conditions.
Understanding the micro-structure and thermodynamics of modern double-wall vacuum insulated tea travel mugs.
Our factory utilizes premium Grade 18/8 (SUS304) and Grade 18/10/2 (SUS316) austenitic stainless steel. For specialized tea mugs, inner liners made of SUS316 offer superior resistance against pitting corrosion caused by high-tannin teas, herbal infusions, and fruit acids. Electropolished interior surface treatments eliminate microscopic pores, preventing residual flavor absorption and tea stain accumulation.
The core thermal barrier is produced via automated vacuum evacuation chambers operating at pressures below 10-3 Pa. By removing air molecules between the inner and outer stainless steel walls, conductive and convective heat transfer is virtually eliminated. Added internal copper plating reflects infrared heat radiation, achieving optimal hot holding times of over 12 hours.
Integrated tea strainers feature laser-cut 300 to 400 mesh micro-apertures. This precise hole pattern allows optimal water circulation for whole-leaf loose tea extraction while retaining micro-particles and sediment. All infuser components are constructed from food-grade SUS304 with removable silicone rims for easy cleaning and maintenance.
Utilizing advanced CNC hydroforming technology, mug body geometries are expanded seamlessly without inducing material stress or micro-cracks. Robotic fiber laser welding ensures invisible, high-strength joinery at the bottle neck and rim, eliminating structural defects and ensuring long-term vacuum stability under drop impact tests.
| Performance Parameter | Standard OEM Specification | Enterprise Grade / CE Certified Standard | Testing Method |
|---|---|---|---|
| Raw Material (Inner Shell) | Stainless Steel SUS304 (18/8) | Medical Grade SUS316 (18/10/2) | Spectrometric Alloy Analysis |
| Vacuum Level Rating | ≤ 1 x 10-2 Pa | ≤ 1 x 10-3 Pa (Ultra-High Vacuum) | Helium Mass Spectrometry Leak Detection |
| Thermal Retention (Hot) | ≥ 60°C at 6 Hours (Starting 98°C) | ≥ 72°C at 6 Hours / ≥ 55°C at 12 Hours | EN 12546-1 Thermal Performance Test |
| Thermal Insulation (Cold) | ≤ 10°C at 12 Hours (Starting 4°C) | ≤ 6°C at 12 Hours / ≤ 10°C at 24 Hours | Calorimetric Insulation Tracking |
| Coating Durability | Standard Powder Coating | 3H Hardness Anti-Scratch Eco-Powder | Cross-Hatch Adhesion Test (ASTM D3359) |
Inside Wuyi Dongyi Dailysupplies Co., Ltd: Operational capacity, smart automation, and enterprise B2B fulfillment efficiency.
Located in the hardware hub of Wuyi County, Zhejiang Province, China, Wuyi Dongyi Dailysupplies Co., Ltd stands as a premier manufacturer specializing in the research, development, and high-volume production of food-grade stainless steel drinkware. Our product range encompasses double-walled vacuum insulation tumblers, tea travel mugs, sports bottles, cola flasks, and multi-functional beverage containers.
From company inception, we have strictly adhered to our core tenets: Quality First, Service First. Operating fully integrated Industry 4.0 automated stamping, hydroforming, vacuum firing, and spray-coating production lines, our facility yields millions of units annually for global brand owners, Amazon FBA top-sellers, and international retail chains across North America, Europe, South America, the Middle East, and Southeast Asia.
Equipped with high-precision automatic stamping presses, robotic tube-cutting systems, and seamless laser welding machinery, ensuring geometric consistency and reduced human error across large production batches.
100% of manufactured travel mugs pass through a two-stage thermal detection process. Mugs are subjected to temperature thermal imaging both before and after outer surface painting to filter out non-performing vacuum seals.
In-house capabilities for UV 3D digital printing, powder coating, electroplating, water-transfer printing, and precision laser engraving allows complete brand personalization with low lead times.
Direct integration with local raw material stainless steel mills in Zhejiang ensures continuous raw material supply, stable pricing structures, and rapid turnarounds for urgent buyer orders.
Comprehensive turnkey engineering and customization programs engineered specifically for international enterprise buyers.
We provide complete OEM and ODM services to satisfy diverse brand aesthetic requirements. From custom body contours, ergonomically designed handles, and modular tea strainers to pantone-matched powder coating and customized logo placements, we turn design concepts into market-ready retail products.
Raw stainless steel coils are verified via X-Ray Fluorescence (XRF) analyzers prior to production. Food-contact plastics and silicone components undergo strict batch-testing for temperature resistance (-20°C to 120°C), ensuring no chemical breakdown or structural deformation occurs during sterilization or high-temp steeping.
Our engineering team collaborates with clients throughout every project phase: rapid 3D prototyping, CAD mold development, pre-production sample validation, third-party lab testing (SGS, TUV, Intertek), and optimized export packaging solutions to withstand international transit stresses.
Modern consumers demand versatile drinking experiences. We design, mold, and produce multi-drinking lid architectures—including 2-in-1 sip & straw tops, press-button flip locks, magnetic sliding closures, and integrated tea steeping timers designed to prevent over-extraction of tea leaves.
With established distribution networks across over 40 countries, we maintain long-standing strategic alliances with importers, promotional merchandisers, and retail conglomerates. We provide transparent lead times, flexible shipment options (FOB, CIF, DDP to Amazon FBA), and dedicated after-sales service.
Our factory prioritizes sustainable manufacturing processes: eco-friendly zero-VOC powder finishes, closed-loop water recovery systems for metal polishing lines, and recyclable packaging materials to support circular economy initiatives of our global partners.
A standardized 6-step manufacturing process ensuring seamless collaboration from initial inquiry to final product delivery.
Submit product requirements, target specifications, quantity projections, and logo art via email or our online B2B contact form.
Receive a detailed commercial proposal covering unit costs, custom tooling options, packaging specs, and estimated lead times.
Obtain 2D/3D CAD technical drawings, custom Pantone finish swatches, and physical pre-production samples for evaluation.
Confirm mass production upon sample approval. Automated manufacturing commences under strict ISO9001 quality supervision.
Batch testing for CE/LFGB chemical safety, thermal performance imaging, vacuum retention inspection, and drop-resistance testing.
Global dispatch via air or sea freight with full customs documentation, accompanied by continuous after-sales technical service.
Emerging innovations in smart thermal regulation, advanced surface coatings, and sustainable material integration.
Integrating low-power micro-sensors into leak-proof lids to display real-time internal liquid temperature. This prevents accidental tongue burns while ensuring delicate green teas are steeped at optimal extraction temperatures (75°C - 85°C).
Incorporating non-toxic phase-change heat buffers between inner and outer steel walls. PCM technology absorbs excess heat rapidly upon boiling water pour-in, cooling tea to drinkable temperature within 3 minutes and maintaining it for hours.
Next-generation surface modifications utilize titanium nitride micro-coatings applied via Physical Vapor Deposition (PVD). This creates an inert barrier completely immune to tea polyphenol staining and acid corrosion.
Transitioning secondary polymer hardware to 100% plant-based renewable bio-resins, lowering manufacturing carbon footprints while maintaining transparency, high heat distortion points, and impact resistance.
Supplying world-class drinkware solutions across international commercial hubs.
Direct answers to technical, regulatory, and commercial queries standard for B2B supply contracts.
Select your required model below to request technical data sheets, wholesale pricing, and sample units.
Dongyi
