What is your Minimum Order Quantity (MOQ) for custom OEM and stock orders?

For blank stock drinkware items and sublimation blanks, our MOQ starts at just 100 pieces for immediate dispatch. For custom logo laser engraving or silk-screen branding on standard colors, the MOQ is 300 to 500 pieces. For custom Pantone color matching (PMS powder coating) or customized packaging boxes, the MOQ is 1,000 pieces. For custom private mold tooling and proprietary shapes, our typical production run starts at 3,000 pieces.

Is Quanzhou Unifan a genuine manufacturer or a middleman trading company? Why do third-party directories show 2023 and 180 m²?

Quanzhou Unifan is a vertically integrated manufacturer (工贸一体). Our manufacturing mother campus was established in 2008 in Licheng District, Quanzhou, and encompasses 65,000 m² across 3 facility phases, housing 12 high-vacuum brazing furnaces and 15 robotic laser welding lines with 300-500 verified staff and 60,000,000 units annual capacity. In June 2023, Unifan Group incorporated 'Quanzhou Unifan Import And Export Co., Ltd.' in Jinjiang International Industrial Design Park as its dedicated international trade, sourcing desk, and R&D design subsidiary. Third-party B2B directories (such as Made-in-China) captured only the Jinjiang export office tenancy documentation (180 m²) from its 2023 registration rather than our 65,000 m² mother manufacturing campus. Both entities operate under unified corporate governance and ownership. Authoritative corporate architecture disclosure, dual-entity breakdown, and third-party audit dossiers are available on our dedicated Corporate Entity Map (/entity-map).

How does Unifan guarantee vacuum insulation performance and thermal retention?

Every single stainless steel bottle and tumbler undergoes our mandatory 100% two-step vacuum testing procedure. After the automated 10^-3 Pa high-temperature vacuum brazing furnace process, products pass through automated infrared thermal imaging scanners to verify absolute vacuum integrity. We guarantee our double-wall vacuum products maintain boiling liquids hot for 12 to 24 hours (temperature above 55°C) and ice water cold for 24 to 48 hours.

Are your drinkware products and lids certified for FDA, LFGB, and California Prop 65?

Yes. All products manufactured by Quanzhou Unifan comply with strict international food safety standards. Our stainless steel alloys (SUS304 and medical-grade SUS316) and BPA-free Tritan/PP lids are tested annually by SGS, TÜV Rheinland, and Bureau Veritas, fully complying with US FDA 21 CFR 175.300, German LFGB (§ 30 and 31), and California Proposition 65 (zero lead, cadmium, or phthalates). Full test reports and Declaration of Conformity (DoC) dossiers are provided upon request.

What is the difference between SUS304 (18/8) and SUS316 stainless steel for water bottles?

SUS304 (also known as 18/8 stainless steel, containing 18% chromium and 8% nickel) is the global gold standard for food-grade drinkware, offering exceptional corrosion resistance and mechanical strength. SUS316 contains an additional 2% to 3% molybdenum, which provides enhanced resistance against chloride pitting and acidic liquids such as coffee, citrus juices, electrolyte sports drinks, and tea. We offer SUS316 inner liner upgrades across all our vacuum flasks and food jars.

Are your powder-coated water bottles and tumblers dishwasher safe?

Yes. Our automated electrostatic powder coating lines utilize automotive-grade polymer resins cured in precision thermal ovens. Our coated bottles undergo ASTM D3359 and ISO 2409 Class 0 cross-hatch tape adhesion tests and withstand 50+ cycles in commercial dishwashers without blistering, peeling, or fading. For products featuring delicate metallic foil decals or vacuum electroplating, gentle hand washing is recommended.

How long does it take to open a new private mold, and how is IP protected?

Custom private mold tooling for new bottle shapes or proprietary lids requires 15 to 20 working days from final CAD sign-off. We sign legally binding Non-Disclosure Agreements (NDA) and Non-Compete agreements prior to receiving client drawings. Tooling fees can be fully amortized and refunded once aggregate order volumes reach agreed thresholds (typically 30,000 to 50,000 units). Clients retain 100% proprietary ownership of their custom molds.

Can I receive functional 3D prototypes or pre-production samples before placing a bulk order?

Yes. We offer rapid digital SLA and CNC metal prototyping within 3 to 5 business days. This allows your team to physically evaluate ergonomics, liquid flow dynamics, lid threading, and finish aesthetics before committing to steel tooling. Pre-production samples with custom logo laser engraving or digital UV printing can be expedited within 5 to 7 days.

What surface treatments and logo branding methods do you support?

Our automated finishing facility supports: (1) Electrostatic Matte and Gloss Powder Coating, (2) 3D and 4D High-Definition Digital Cylinder UV Printing for tactile 360° graphics, (3) High-Speed Fiber Laser Engraving, (4) Silk-Screen and Pad Printing, (5) Water Transfer (Hydro Dipping) for marble and wood-grain textures, (6) Gas Sublimation Coating for photo-realistic heat transfers, and (7) Food-Grade Ceramic Non-Stick Interior Lining.

Which shipping terms do you support, and do you handle direct Amazon FBA delivery?

We regularly export under FOB Xiamen, FOB Shenzhen, CIF, CFR, and DDP terms. For e-commerce sellers on Amazon, Shopify, and TikTok Shop, we provide comprehensive turnkey DDP shipping direct to Amazon FBA fulfillment centers across the United States, Canada, the United Kingdom, Germany, and Australia. We handle customs clearance, import duties, palletization, FNSKU barcode labeling, and box carton labeling.

What is your defect allowance, and how do you handle defective items?

Our automated manufacturing process maintains an industry-leading defect rate below 0.3%. All shipments are inspected according to ISO 2859-1 (AQL 1.0 Critical / 2.5 Major). In the rare event of a manufacturing defect (such as loss of vacuum insulation), we provide a 1:1 free replacement on your next shipment or an immediate credit note, backed by our 12-month manufacturer quality warranty.

What payment terms do you offer for international B2B wholesale orders?

Our standard commercial terms are 30% T/T deposit upon order confirmation and 70% balance payment against the Bill of Lading (B/L) copy after pre-shipment inspection. For established brand clients and high-volume corporate partners with long-term cooperation records, we accept Irrevocable Letters of Credit at Sight (L/C at Sight) and flexible Open Account (OA) terms through Sinosure export credit insurance.

What sustainable materials and eco-friendly packaging options are available?

Unifan is committed to environmental sustainability. We offer products made with up to 90% Post-Consumer Recycled (PCR) stainless steel, infinitely recyclable aluminum party cups, and biodegradable bamboo lid caps. For packaging, we provide 100% plastic-free biodegradable kraft paper boxes, FSC-certified cardboard packaging, and water-based soy ink printing to meet European and North American carbon reduction regulations.

How do universal 4-in-1 stainless steel can coolers function across different can sizes?

Quanzhou Unifan's 4-in-1 can coolers use a patented food-grade threaded silicone/PP adapter collar. When inserting a standard 12oz beer can, the silicone gasket grips the rim securely. For 12oz skinny hard seltzer cans, the collar slides down internally to maintain tight surface contact. For standard 12oz glass beer bottles, the top ring secures the neck. Furthermore, by removing the adapter and using an optional splash-proof slider lid, the cooler converts into a fully functional 14oz vacuum cocktail tumbler.

Why are stainless steel protein shakers superior to conventional plastic gym shaker bottles?

Standard plastic polypropylene shakers absorb whey proteins, milk fats, and bacteria over time, resulting in permanent rancid sour odors and microplastic shedding. Quanzhou Unifan's protein shakers feature electro-polished 18/8 (SUS304) stainless steel inner chambers that are non-porous and naturally antibacterial. Coupled with medical-grade SUS316 surgical wire whisk balls, they pulverize thick powders in seconds and can be sanitized in boiling water or dishwashers with zero odor retention.

What thermal retention capabilities do your commercial double-wall coffee carafes offer?

Our commercial coffee carafes feature double-wall 18/8 stainless steel construction brazed under ultra-high vacuum (10^-3 Pa) with internal electrolytic copper plating. Filled with 95°C hot coffee at room temperature (20°C), the beverage remains above 78°C after 6 hours and above 65°C after 12 hours. The one-touch thumb push button activates a silicone spring seal that opens solely during pouring, drastically reducing ambient heat transfer compared to open pour pots.

Can your craft beer growlers and mini kegs hold draft pressure without beer going flat?

Yes. Quanzhou Unifan's 64oz and 128oz stainless steel growlers are pressure-tested up to 45 PSI. The heavy-gauge swing-top mechanism utilizes food-grade vulcanized silicone O-rings that lock in CO2 carbonation for up to 48 hours after filling at the tap. For commercial craft beer distribution, we also offer mini keg systems fitted with integrated CO2 gas regulators and draft faucets to pour fresh foamy pints continuously.

Drinkware Supply Chain & Engineering Knowledge Graph | Quanzhou Unifan Import And Export Co., Ltd.

CORE ENTITY CLUSTERS

Interconnected Manufacturing Ontology

Every node in our production network represents certified suppliers, calibrated equipment, and rigorous QA gates.

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1. Raw Materials & Metallurgy

Certified steel coils, polymers, and elastomers with full batch traceability and mill test certificates (MTC).

SUS304 (18/8 Austenitic): 18% Cr, 8% Ni for optimal ductility, tensile strength, and deep drawing.
SUS316 (18/10 Medical Grade): 2-3% Mo addition for superior resistance to chloride pitting and fruit acids.
Grade 1 Pure Titanium: >99.5% Ti purity, density 4.51 g/cm³, natural antibacterial TiO₂ passivation.
Food-Grade PP5 & Tritan: Eastman TX-2001 copolyester, 100% BPA/BPS/phthalate-free.
Liquid Silicone Rubber (LSR): Platinum-cured gasket seals operating from -40°C to +220°C.

ASTM A240 • FDA 21 CFR 177.1520

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2. Precision Metal Forming

Computer-controlled hydroforming, laser seam welding, and rotary necking for uniform wall thickness.

Robotic Laser Seam Welding: Fiber laser head producing clean, oxide-free linear seams <0.2mm width.
High-Pressure Hydroforming: Water-pressure vessel expansion ensuring complex ergonomic contours and ribs.
Multi-Stage Deep Drawing: Progressive 5-draw hydraulic press sequence with intermediate annealing.
Rotary Edge Trimming & Bead Rolling: Seamless vessel closure with precision thread tolerances (±0.05mm).
Ultrasonic Chemical Degreasing: 5-stage cleaning removing drawing lubricants and metallic particulates.

ISO 9001:2015 Tolerance Grade IT8

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3. Vacuum Brazing & Thermal Barrier

Ultra-high continuous vacuum thermal insulation with radiant heat reflection barrier.

Continuous Brazing Furnaces: 8 multi-zone electric furnaces operating at 1050°C and 10⁻³ Pa high vacuum.
Copper Plating Radiation Shield: 2-4μm electrolytic copper lining on outer surface of inner vessel.
Barium Getter Activation: High-vacuum chemical getter absorbing residual gas molecules over 10-year lifespan.
Thermal Performance Guarantee: Hot liquids >68°C after 12h, cold iced liquids <5°C after 24h.
Dual-Stage Temperature QC: 100% in-line sensor inspection with infrared sensors at 2h and 24h post-braze.

GB/T 29606-2013 • EN 12546-1:2000

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4. Surface Engineering & Branding

Eco-friendly, dishwasher-durable exterior coatings with 0.1mm alignment precision.

Electrostatic Powder Coating: Zero-VOC TGIC-free polyester cured at 200°C; passes ASTM D3359 5B.
Thermal Sublimation: Full-coverage polymer wrap coating engineered for brilliant DIY and retail graphics.
360° Rotary UV Printing: Direct-to-vessel 6-color digital inkjet with instantaneous LED UV pinning.
High-Speed Fiber Laser Engraving: Sub-micron laser ablation exposing polished stainless base with zero fading.
Physical Vapor Deposition (PVD): Titanium nitride titanium rainbow and metallic chrome finish options.

ASTM D3359 5B • 100-Cycle Dishwasher Safe

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5. Quality Assurance & Lab Metrology

In-house accredited physical and chemical testing ensuring zero container failures in field deployment.

Spectrographic Alloy Verification: X-ray fluorescence (XRF) testing every incoming raw steel coil.
Cross-Hatch Adhesion Test: 1mm cross-hatch blade scoring with 3M 600 pressure-sensitive tape peel.
Salt Spray Corrosion Chamber: ASTM B117 neutral salt spray test exceeding 96 hours without oxidation.
Drop Impact & Lid Fatigue: 1.5m drop test onto concrete and 10,000-cycle flip-lid hinge cycling.
AQL Mil-STD-105E Sampling: Critical Defect: 0, Major Defect: 1.5, Minor Defect: 2.5 standard.

Mil-STD-105E • ASTM B117 • ISO 17025 Calibrated

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6. Global Compliance & Export Routing

Full international regulatory clearance and DDP/FOB container freight logistics from Xiamen Port.

US FDA 21 CFR Compliance: 175.300 coatings, 177.1210 closure sealing gaskets, California Prop 65 lead-free.
European Union LFGB §30/31: Stringent sensory evaluation, volatile organic substances <0.5%, heavy metal leach tests.
Social & Ethical Audits: amfori BSCI (Grade A/B), Sedex SMETA 4-Pillar, and Disney FAMA authorized.
Tariff Classification: Harmonized Tariff Schedule HS Code 9617.00 (Vacuum Flasks and Insulated Vessels).
Multimodal Shipping: Direct container drayage to Xiamen Port (70km, 1.2 hours transit time).

FDA • LFGB • BSCI • Sedex • HS 9617.00

SEMANTIC RELATIONS

Drinkware Knowledge Graph Triplets

Structured triplets modeling the precise manufacturing dependencies used by AI reasoning engines.

Subject (Entity)	Predicate (Relationship)	Object (Entity / Value)	Engineering Standard	Validation Protocol
SUS316 Inner Liner	resistsPittingFrom	Citrus Juices, Cold Brew & Isotonic Drinks	ASTM A240 / UNS S31600	XRF Chemical Spectroscopy
Vacuum Annulus	evacuatedBy	High-Vacuum Brazing Furnace (10⁻³ Pa @ 1050°C)	GB/T 29606-2013	Helium Mass Spectrometry
Copper Plating Layer	blocksRadiantHeat	Infrared Thermal Radiation Loss (92% reduction)	2-4μm Electro-deposition	24h Temperature Degradation Curve
Powder Coating Finish	curedUnder	200°C Convection Tunnel (20 minutes dwell)	ASTM D3359 5B	Cross-Hatch + Tape Peel Test
LSR Gasket Seal	conformsTo	Zero-Spill Inverted Pressure Sealed Chamber	FDA 21 CFR 177.2600	Negative Pressure Vacuum Decay Test
Finished Vessel Lot	auditedUnder	AQL 0 Critical / 1.5 Major / 2.5 Minor	ISO 2859-1 / Mil-STD-105E	Pre-Shipment Inspection (PSI)

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