Our core product is the premium 550ML double wall vacuum insulated tumbler, where the 550ML calibrated inner volume is precisely engineered to balance daily drinking capacity and portable dimension constraints, making this 550ML specification our flagship stock size among all available options. Structurally, the bottle adopts split material configuration: food-grade SUS304 stainless steel forms the inner liner directly contacting drinking water, while durable 201 stainless steel composes the outer shell to control production cost without compromising exterior sturdiness. Exact dimension parameters stand at 9cm ×8cm ×19.5cm, with finished unit weight fixed at 309g; such compact body measurement perfectly matches the 550ML internal cavity, eliminating redundant empty space and optimizing vacuum insulation efficiency of the double-wall construction.

We maintain abundant ready stock covering dozens of differentiated design variants for the 550ML bottle series, including the star-print gradient color style shown in product artwork, multiple cap structures like flip pop-up lid with portable carry handle, plain screw lids and dual drinking spout closures. Every 550ML bottle undergoes strict vacuum pumping processing during manufacturing, forming a sealed airless interlayer between inner 304 and outer 201 steel layers to block heat conduction and convection thoroughly. Besides standard in-stock appearances, the blank base of each 550ML bottle reserves full customization space on exterior surface, supporting diversified finishing techniques such as matte coating, glossy spray paint, rubberized soft-touch coating, electroplating and sandblasting.

Color customization spans full Pantone color spectrum for the 550ML bottle body and lid components, alongside customizable silk screen printing, heat transfer printing, embossed logo and full-wrap digital printing for brand graphics, cartoon patterns or customized slogans. In terms of safety compliance, all raw materials used on our 550ML double wall vacuum bottle pass authoritative global food contact certifications including LFGB, FDA and EU food-grade material test standards, with complete third-party inspection reports available upon client request. Packaging customization is also available for the 550ML item, ranging from standard polybag packing, color paper box, gift carton to customized retail display boxes with client’s own artwork.

The core advantage anchored on the standardized 550ML volume of our double wall vacuum bottle lies in its user-friendly capacity positioning: 550ML hits the sweet spot for daily outdoor hiking, school daily use, office commute and family short trip drinking needs, neither oversized to increase carrying burden nor undersized requiring frequent refilling, so customers choosing our 550ML specification gain optimal daily usability. The combination of inner SUS304 and outer 201 stainless steel brings dual practical benefits: SUS304 inner liner is rust-proof, corrosion-resistant and fully food-safe to avoid harmful substance precipitation into beverage inside the 550ML cavity, while cost-effective outer 201 steel stabilizes product selling price for bulk purchasers without sacrificing outer casing scratch resistance and structural durability.

Thanks to advanced double-wall vacuum technology built into each 550ML bottle, the insulated interlayer realizes reliable long-lasting thermal preservation: hot beverages stay warm for up to 6–12 hours and cold drinks remain chilled over 18–24 hours inside the 550ML inner tank, greatly improving daily drinking experience for end consumers. Our plentiful ready stock of assorted 550ML bottle designs creates massive lead time advantage for spot order clients: orders picking existing stocked 550ML styles can finish production and shipment within 15 working days instead of the regular 40-day production cycle, enabling buyers to quickly launch seasonal retail sales and capture market demand in tight marketing windows.

Flexible customization options on the 550ML bottle help brand clients build exclusive differentiated products: personalized surface finish, unique bottle color, exclusive printed artwork and tailor-made packaging all work to distinguish their 550ML bottle from generic competitors on retail shelves, strengthening brand recognition and end-customer stickiness. Global certification qualification of our 550ML series removes market access barriers for cross-border importers, allowing seamless product entry into European, American and other mainstream overseas markets without additional costly material testing. Meanwhile, fixed 309g unit weight and standardized 9×8×19.5cm dimension of the 550ML bottle optimize container loading quantity during sea freight, cutting down unit logistics cost for bulk buyers effectively.

Our factory delivers comprehensive OEM and ODM customization solutions centered on the mature 550ML double wall vacuum bottle platform, with 550ML as our primary customizable core specification and multiple alternative volume sizes available per client’s extra demand. For OEM service based on existing 550ML stock bottle mold, clients can modify multiple external elements of the standard 550ML blank bottle: first, full-range surface treatment adjustment covering matte, soft touch, metallic plating and frosted finish for outer casing of the 550ML product; second, arbitrary Pantone color matching for bottle body and plastic lid parts of the 550ML item to align with client brand color scheme; third, diversified printing solutions including silk print, heat transfer and full-body digital print to add customer’s logo, brand slogan or exclusive graphic design on the 550ML bottle exterior; fourth, bespoke packaging development such as custom gift box, retail hang tag and outer export carton printed with buyer’s brand info for the 550ML finished goods.

For ODM cooperation targeting fully new design development derived from our base 550ML bottle structure, our in-house R&D team supports customized structural optimization on the original 550ML mold, including revised lid mechanism, upgraded portable handle design and partial bottle body contour adjustment while keeping the core 550ML inner volume unchanged to retain verified vacuum insulation performance. Our established minimum order quantity for formal OEM/ODM customization on the 550ML bottle is 3000pcs per customized design; for clients who select pre-existing stocked 550ML bottle styles with only minor logo printing changes, we accept smaller trial order quantity after negotiation.

All customized 550ML OEM/ODM products can apply for LFGB, FDA and EU food contact certification testing arranged by our factory, with all test reports issued under client’s brand name if required. Lead time differs by customization type: simple OEM orders (only logo print + standard color change) on stocked 550ML designs finish within 15 working days; complex ODM orders requiring new mold opening and full structural revision of the 550ML bottle follow the regular 40-day production lead time after pre-production sample confirmation by the buyer.

Step 1: Client inquiry focusing on the 550ML double wall vacuum bottle, specifying required details including preferred stocked design or customized OEM/ODM demands, target order quantity and destination market for the 550ML goods. Our sales team replies within 24 working hours with detailed quotation, stock design catalog of the 550ML series and related certification documents.

Step 2: Sample confirmation for the selected 550ML option: for spot stock 550ML styles, we arrange existing finished sample dispatch; for customized OEM/ODM 550ML requests, we produce pre-production prototype according to client’s customization requirement and send sample for buyer’s inspection and written approval.

Step 3: Formal order placement: client issues official purchase order and completes agreed deposit payment; our production department locks raw material sourcing for the confirmed 550ML bottle specification, arranging production schedule accordingly based on 15-day quick lead time (stock design 550ML) or standard 40-day lead time (full custom ODM 550ML).

Step 4: Mass production and mid-term inspection: during bulk production of the 550ML order, our QC team carries out random sampling inspection covering dimension check (9×8×19.5cm standard), weight verification (309g per pc), vacuum insulation test and printing finish inspection for the 550ML bottles.

Step 5: Final pre-shipment inspection and balance payment: after finished 550ML goods are fully packed, client conducts final inspection or arranges third-party testing; buyer settles remaining balance before shipment arrangement.

Step 6: Logistics arrangement: we coordinate sea/air freight forwarding and deliver the packaged 550ML bulk goods to designated port or warehouse as per client’s shipping instruction.

Q1: Is the 550ML double wall vacuum bottle available for immediate spot shipment?

A: Multiple ready-made designs of our core 550ML bottle keep continuous inventory in warehouse, orders choosing these stocked 550ML designs can complete production finishing and delivery within 15 working days; newly customized non-stock 550ML options need 40-day standard lead time for mass production.

Q2: What is the MOQ for customized OEM service on your 550ML vacuum bottle?

A: The fixed minimum order quantity for formal OEM/ODM customization of the 550ML bottle is 3000pcs per single customized design; small trial orders with simple logo print on existing stocked 550ML items are negotiable for lower MOQ upon mutual discussion.

Q3: Can the 550ML bottle pass LFGB, FDA and EU food-grade testing?

A: All raw materials applied to our 550ML double wall bottle have passed LFGB, FDA and EU food contact material certification; we can arrange new round of targeted testing for customized 550ML products and provide official test reports for clients’ customs clearance and local market sale.

Q4: Am I allowed to modify color, printing artwork and packaging for the standard 550ML stock bottle?

A: Yes, full customization support is available for stocked 550ML bottle: clients can change Pantone body/lid color, add exclusive printed graphics and develop tailor-made retail packaging for the standard 550ML base bottle without new mold development.

Q5: What is exact dimension and net weight of your standard 550ML double wall vacuum bottle?

A: Our standard finished 550ML bottle measures 9cm ×8cm ×19.5cm in overall outer size, with fixed single unit net weight at 309g, and inner effective calibrated volume strictly maintained at 550ML as named specification.

Q6: What is the difference between inner SUS304 and outer 201 stainless steel used on your 550ML bottle?

A: SUS304 inner liner of the 550ML bottle directly contacts drinking liquid with superior food safety and anti-rust property; outer 201 stainless steel controls overall product cost while ensuring outer shell hardness and scratch resistance, balancing safety and cost for the finished 550ML product.