Precision-engineered vacuum insulated flasks, tumblers, and mugs manufactured directly from our Zhejiang production complex.
The global thermal drinkware and insulated coffee container industry has experienced a paradigm shift over the past decade. No longer viewed strictly as utilitarian gear for camping or industrial job sites, the coffee flask has transitioned into a premier lifestyle statement, a daily corporate accessory, and a critical component of the specialty coffee ecosystem. According to recent market analysis, the global vacuum insulated drinkware market size reached USD 6.8 Billion in 2023 and is projected to expand at a compound annual growth rate (CAGR) of 7.4% from 2024 to 2032.
As consumer demand shifts toward sustainable alternative solutions to single-use plastic and paper coffee cups, enterprise buyers, retail brands, and Amazon FBA sellers require sophisticated OEM (Original Equipment Manufacturer) partners capable of high-volume output without compromising thermal precision or food safety compliance.
Wuyi Dongyi Dailysupplies Co., Ltd stands at the epicentre of this manufacturing evolution. Situated in Wuyi County, Zhejiang Province—China's industrial hardware hub—our production ecosystem integrates advanced metallurgic forming, double-wall high-vacuum extraction, automated powder coating, and precision laser engraving to serve multi-national distributors, promotional agencies, and consumer brands globally.
At the core of high-performance OEM coffee flask manufacturing lies the physics of vacuum thermokinetics. Heat transfer occurs via three mechanisms: conduction, convection, and radiation. Our double-walled stainless steel construction effectively neutralizes all three paths to achieve industry-leading thermal insulation performance.
By evacuating the air between the inner (0.4mm) and outer (0.5mm) stainless steel walls to a vacuum level exceeding 10-3 Pa, molecular conduction of heat is virtually eliminated.
The exterior surface of the inner stainless steel wall is coated with a microscopic layer of radiant-reflective copper. This reflects thermal infrared radiation back into the beverage, retaining coffee brewing temperatures (92°C to 96°C) for extended durations.
We utilize Premium 18/8 (SUS304) food-grade stainless steel for standard shells and offer high-corrosion-resistant SUS316 (18/10) surgical steel inner liners for acidic beverages like cold brews and espresso shots.
Our OEM manufacturing standard ensures that boiling water poured at 98°C into a 20oz coffee flask maintained in an ambient environment of 20°C ± 2°C will remain above 68°C after 6 hours and above 52°C after 12 hours. Cold liquid containing ice crystals maintains temperature below 8°C for 24 hours.
| Flask Category | Material Composition | Insulation Type | Heat Retention (6h) | Cold Retention (12h) | Target Applications |
|---|---|---|---|---|---|
| 20oz Executive Coffee Tumbler | SUS304 Inner/Outer + Copper Layer | High-Vacuum Double Wall | > 65°C | < 7°C | Urban Commute, Office Desk, Drive-thru |
| 40oz Hydration Quencher | SUS304 Body + Ergonomic PP Handle | High-Vacuum Double Wall | > 60°C | < 5°C | All-day hydration, Road Trips, Outdoor Gym |
| 64oz Heavy-Duty Flask | SUS304 Double Wall + Silicon Base | High-Vacuum Industrial Grade | > 72°C | < 4°C | Construction sites, Expedition, Sports Teams |
| 20oz Skinny Vogue Tumbler | SUS304 / Optional Ceramic Liner | Vacuum Slim Architecture | > 62°C | < 8°C | Specialty Coffee, Retail Branding, Fashion Gifts |
For international buyers and private label brands, differentiation is the catalyst for market success. Wuyi Dongyi Dailysupplies Co., Ltd provides an end-to-end customization matrix allowing global partners to tailor every aesthetic, functional, and structural aspect of their coffee flask line.
We offer specialized coating technologies engineered to withstand Dishwasher cycles (50+ commercial washes) and extreme abrasive wear:
Lid functionality determines user experience and leakproof performance. Our engineering department designs and molds high-grade BPA-Free Tritan, AS, and Polypropylene (PP) closure systems:
Effective product design matches the dynamic habits of end-users across international markets. As a prime supplier, we analyze regional consumer behavior to tailor coffee flask functionality for maximum market penetration.
Urban professionals in North America and Western Europe demand sleek, car-cup-holder-compatible profiles (base diameter < 75mm). Slim 20oz tumblers with splash-proof lids fit standard vehicle consoles and espresso machines while preserving barista brew quality.
For rugged outdoor enthusiasts in Scandinavia and Australasia, 64oz high-capacity vacuum flasks equipped with heavy-duty handles, powder-coated finishes, and integrated serving cups provide essential thermal stability during overnight wilderness excursions.
The rise of social-media-driven hydration trends (such as 30oz and 40oz handle tumblers with straws) requires ergonomic balancing, easy-grip handles, and double-wall chill retention for high-volume cold coffee and hydration consumption.
Quality reliability is the foundation of our supplier reputation. Wuyi Dongyi Dailysupplies Co., Ltd operates under strict ISO9001 management protocols. Every coffee flask passes through a 6-stage industrial workflow before export packaging.
Precision hydraulic expansion & metal cutting.
Seamless automated inner & outer shell joining.
High-temperature vacuum evacuation ovens.
100% infrared sensor temperature verification.
Automated powder spray & logo printing.
FDA / LFGB food safety audit & boxing.
From our inception, Wuyi Dongyi Dailysupplies Co., Ltd has adhered strictly to the principles of "Quality First, Service First". Our strategic partnerships extend across North America, Europe, South America, the Middle East, and Southeast Asia. Whether providing private label OEM execution or co-developing innovative ODM product molds, we deliver unmatched production scalability and supply chain security.
As the OEM insulated drinkware sector evolves, smart technologies, sustainable materials, and advanced thermal coatings are redefining competitive standards. Dongyi Dailysupplies remains at the forefront of R&D innovation.
Integration of low-power LED touchscreens into flask lids allows real-time monitoring of internal beverage temperature, preventing accidental burns and ensuring optimal coffee flavor extraction conditions.
By implementing advanced rotary wall-thinning techniques, wall thickness is reduced to 0.24mm while maintaining structural integrity, yielding ultra-lightweight thermal flasks ideal for athletic and travel applications.
Transitioning from traditional fossil-fuel plastics to ocean-recycled PET, post-consumer recycled (PCR) stainless steel, and plant-derived bio-resins for lid assemblies, helping enterprise clients reach ESG carbon-neutral targets.
Essential guidance for sourcing directors, brand managers, and wholesale procurement specialists.
Explore additional popular models available for private label customization, bulk wholesale, and global export.
Wuyi Dongyi Dailysupplies Co., Ltd is located in Wuyi county, Zhejiang Province, China. We specialize in the research, development, and high-volume production of food-grade stainless steel tumblers, mugs, bottles, cups, jugs, and double-walled vacuum insulated containers.
Equipped with advanced production machinery, strict quality testing systems, and an experienced R&D engineering team, we deliver competitive OEM and ODM solutions to clients across the United States, Europe, South America, the Middle East, and Southeast Asia. Guided by our foundational core tenets—Quality First, Service First—we build lasting, mutually beneficial partnerships with global brands.
Dongyi