Engineered for Superior Thermal Efficiency, Outdoor Durability, and Global Brand Customization
Located in the heart of China’s stainless steel hardware manufacturing hub—Wuyi County, Zhejiang Province—Wuyi Dongyi Dailysupplies Co., Ltd stands as an industry-leading enterprise specialized in the research, design, engineering, and large-scale manufacturing of high-performance food-grade stainless steel drinkware.
Our comprehensive production facility spans double-walled vacuum insulation constructions as well as single-wall thermal solutions. From high-capacity outdoor hydration flasks (35oz, 40oz, 64oz) to ergonomic office coffee mugs, skinny tumblers, cone-shaped cola bottles, and regional specialty cups like the Yerba Mate gourd, our R&D engineering team combines advanced metallurgical craftsmanship with modern industrial design.
Every batch produced in our facilities undergoes rigorous thermal retention testing, automated vacuum leak checks, electro-polishing surface verification, and strict lead-free, BPA-free compliance audits meeting global standards (FDA, LFGB, CE, RoHS, Prop 65).
Empowering Global Brands, Retailers, and Importers with High-Yield Supply Chains
Technical Superiority, Industrial Supply Chain Integration, and Advanced Vacuum Technology
Situated in Wuyi County, adjacent to Yongkang (the Hardware Capital of China), our facility leverages a localized 30-minute supply network for high-grade SUS304/316 raw stainless steel coils, precision mold forging, silicone sealing gaskets, and specialized lid tooling. This reduces raw material procurement cycles by 40% compared to international competitors.
Unlike conventional vacuum methods, our factory utilizes high-efficiency automated tailless vacuum evacuation chambers. We apply an ultra-thin layer of radiant heat-reflecting copper plating onto the exterior wall of the inner flask shell. This guarantees up to 24 hours of cold preservation and 12 hours of hot thermal retention.
Our modern surface treatment lines feature dust-free robotic spray booths capable of executing durable powder coatings, rubber paint finishes, gradient electroplating, sublimated transfers, and precision 360-degree laser engraving. Coatings are wear-resistant, dishwasher-safe, and fully compliant with international chemical safety standards.
A Streamlined, ISO-Compliant Process from Concept Blueprint to Mass Production
Our engineering team works closely with enterprise procurement managers to analyze thermal targets, structural ergonomics, lid sealing mechanics, and volumetric capacity (from 8oz mini cups to 64oz outdoor flasks).
Utilizing 3D metal printing and high-precision CNC machining, we generate functional stainless steel samples within 5-7 business days for physical evaluation, fluid dynamics testing, and lid fitment check.
Premium SUS304 stainless steel tubes undergo automated deep drawing, expanding, and hydroforming processes to construct the inner shell and outer body without structural weakness or wall thinning.
Inner and outer shells are robotically welded together before undergoing high-temperature tailless vacuum firing at 1000°C and copper plating coating, creating an impenetrable vacuum insulation barrier.
Inner walls undergo chemical-free electrolytic polishing to remove impurities, forming an anti-microbial, corrosion-resistant surface that never retains beverage flavors or metallic odors.
Every finished insulated flask undergoes online infrared temperature leak detection, 1.2m drop-impact tests, lid sealing pressure tests, and custom retail box packaging before shipment.
Actionable Industry Insights for Enterprise Buyers, Brand Owners, and Distributors
The hydration market has seen an explosive shift toward large-capacity vehicle-friendly tumblers equipped with ergonomic side handles, dual-purpose sipping/straw flip lids, and narrow base contours designed to fit standard automotive cup holders.
Modern consumers demand pure beverage taste. Advanced ODM options now include internal ceramic coating spray treatments that protect delicate specialty coffees and carbonated acidic drinks while offering ultra-light thin-wall metal stretching technology.
Lid technology is evolving rapidly. Key ODM configurations include leak-proof magnetic slider lids, digital LED temperature displays integrated into touch-sensitive caps, and straw covers crafted from food-grade LFGB silicone.
Fulfilling Strategic Sourcing Needs Across North America, Europe, South America, and Asia
High-capacity 64oz and 40oz rugged vacuum flasks engineered with heavy-duty powder coating, anti-drop silicone boots, and wide-mouth openings for ice insertion—ideal for hiking, camping, and sports leisure brands.
Sleek 20oz skinny tumblers, 30oz Hydra Quenchers, and cone-shaped cola bottles designed for seamless portability, fits in backpacks and vehicle holders while maintaining aesthetic brand appeal.
Custom ODM solutions like the 8oz stainless steel Yerba Mate Gourd with double-wall thermal insulation, tailored specifically to South American drinking customs without outer shell thermal conduction.
Full private label OEM manufacturing including custom pantone color matching, custom retail box packaging, laser-etched corporate logos, and barcode packaging for Amazon FBA & retail chains.
Exporting Premium Stainless Steel Vacuum Ware to Over 60 Countries Worldwide
From company inception, Wuyi Dongyi Dailysupplies Co., Ltd has adhered strictly to the operating tenets: "Quality First, Service First". Through persistent technological innovation and client-centric customized services, we have built long-term cooperative partnerships with major importers, brand distributors, Amazon top-sellers, and corporate gift suppliers across North America, Europe, South America, the Middle East, and Southeast Asia.
Whether you require low MOQ trial orders for niche market validation or large-volume OEM container shipments, our international sales and engineering service teams ensure seamless communication, rapid lead times, and comprehensive post-sales warranty support.
Explore Our Most Popular Custom Stainless Steel Tumblers, Mugs, and Sports Flasks
Everything You Need to Know About Ordering Custom Insulated Vacuum Flasks Direct from Factory
We primarily utilize premium food-grade SUS304 (18/8) stainless steel for both inner and outer shells. For specialized high-end marine or medical-grade requests, we also offer SUS316 stainless steel interior liners which provide superior acid and corrosion resistance.
Our standard MOQ for custom pantone powder coating or silk-screen branding starts at 1,000 pieces per color/design. For standard inventory colors requiring only laser-etched custom logos, we accept flexible trial quantities down to 500 units.
Our factory conducts a 100% two-stage infrared online thermal inspection. Every flask is vacuum-tested twice—once immediately after vacuum firing and once after surface coating—ensuring less than 0.2% defect rates before shipment.
We provide comprehensive surface decorating technologies including matte/gloss powder coating, rubber soft-touch paint, metallic electroplating, water transfer printing, 3D UV digital printing, silk screen printing, and precision fiber laser etching.
Yes. All products manufactured by Wuyi Dongyi Dailysupplies Co., Ltd strictly comply with US FDA 21 CFR 175.300, European EU (EC) No 1935/2004, German LFGB, California Prop 65, and REACH standards. All plastics used (PP/Tritan/Silicone) are 100% BPA-free and lead-free.
Existing model samples with custom laser logos are produced within 3-5 days. New custom shape CAD tooling takes approximately 15-20 days. Mass production lead time is generally 25-35 days following deposit confirmation and sample approval.
Partner with Wuyi Dongyi Dailysupplies Co., Ltd for direct factory pricing, reliable supply chain scheduling, and top-tier OEM/ODM precision manufacturing.
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