Our bottles are crafted from premium Food-Grade 304 or 316 (Marine-Grade) Stainless Steel, ensuring maximum corrosion resistance and durability. All components, including BPA-free lids and silicone seals, are strictly compliant with FDA (US), LFGB (Germany), and SGS food safety standards. We guarantee a 100% non-toxic, odorless drinking experience.

Using industry-leading double-wall vacuum technology, our standard models maintain heat for 12+ hours (≥60°C) and cold for 24+ hours (≤10°C). Our high-performance series can extend these durations up to 24 hours for hot and 48 hours for cold.

Note: Performance may vary based on ambient temperature and usage habits.

We implement a rigorous 5-Tier QC System:

1. Material Purity Test: Verifying stainless steel grade.
2. Vacuum Integrity Test: 100% full inspection to ensure zero leakage.
3. Thermal Performance Sampling: Ensuring insulation meets marked standards.
4. Coating Adhesion Test: Checking for surface durability.
5. Final Assembly & Aesthetics: Ensuring a flawless finish before packing.
   Third-party inspection reports (SGS/Intertek) are available upon request.

Absolutely. We are a full-service manufacturing partner. Our customization scope includes:

• Branding: Laser engraving, UV printing, silk screen, and 3D printing.
• Color & Finish: Pantone color matching with powder coating, rubberized, or gradient finishes.
• Design: Exclusive mold development for unique cup bodies and lid structures.
• Accessories: Custom packaging, silicone boots, straws, and carry straps.

Standard In-Stock Items: Low MOQ of 500 units per model (supports mixed colors).

• Customized Orders (Logo/Color): MOQ starts at 3,000 units.
• Bespoke Molds: Requirements vary by design complexity.
  We offer tiered pricing for bulk orders exceeding 5,000 units. Please contact our sales team for a custom quote.

• Requesting: Simply click "Get a Quote" or email [inquiry@tannmi.com] with your specs.
• Cost: Standard samples are charged at a nominal fee (refundable upon your first bulk order). The buyer covers shipping (DHL/FedEx/UPS).
• Lead Time:The delivery timeframe varies depending on your country and region. For specific estimated arrival times and logistics details, please consult our customer service team directly.

• Standard Orders: 25–45 business days after deposit and sample approval.
• Custom/Bespoke Orders: 35–60 business days depending on complexity.
• Pro Tip: During peak seasons (Mar-May & Sep-Nov), we recommend placing orders 30 days in advance to ensure timely delivery.

We support T/T (Telegraphic Transfer) with a standard term of 30% deposit and 70% balance against the Bill of Lading (B/L). For large-scale partnerships, we accept L/C (Letter of Credit). Small sample fees can be paid via PayPal or Western Union.

• Logistics: We offer FOB (Ningbo/Shanghai), CIF, and DDP solutions via Sea, Air, or Express (DHL/FedEx).
• Packaging: Every unit is protected in an export-grade color box and packed into reinforced five-layer corrugated master cartons.
• Neutral Packaging: We fully support neutral or private-label packaging for Amazon and cross-border e-commerce sellers.

Yes. Our products are engineered to meet the strict safety and labeling standards required by Amazon and major global retailers. We provide comprehensive support for CPSIA (US) and REACH (EU) compliance, ensuring your products pass customs and platform audits without delay.

While both are food-grade, 304 stainless steel is the industry standard for daily use due to its excellent durability and cost-effectiveness. 316 stainless steel contains molybdenum, providing superior resistance to chlorides and salt spray, making it the ideal choice for high-end medical-grade products or extreme outdoor environments.

All our vacuum-insulated products feature a sophisticated double-wall structure with a high-vacuum interlayer. This technology ensures the exterior remains bone-dry (Sweat-Proof), regardless of how cold the beverage inside is, protecting your hands and furniture.