China has a large stainless steel drinkware supply chain, but insulated water bottle suppliers do not all serve the same type of buyer. Some focus on high-volume OEM programs and new product engineering. Others are better structured for private-label projects, promotional orders, broad product selection, or lower-volume market testing.
This guide introduces ten China-based insulated water bottle suppliers that bulk buyers may consider. It is not a ranking, and the order is alphabetical. Each profile summarises the company’s product focus, main services, and practical strengths for different sourcing projects. Information was reviewed and updated in August 2026.
Quick Comparison of the 10 Suppliers
| Supplier | Location or Main China Base | Product Focus | Service Scope | Potential Fit |
|---|---|---|---|---|
| FlaskWholesale | Yongkang, Zhejiang | Bottles, tumblers, mugs, jugs, shakers and can coolers | Private label, low-volume branding, OEM, ODM, packaging and mold development | Market testing, smaller branded orders and scalable customization |
| Ansheng | Yongkang, Zhejiang | Vacuum drinkware and food containers | OEM, ODM, R&D, laboratory testing, mass production | Large retail and high-volume development programs |
| Diller | Guangzhou and Zhaoqing, Guangdong | Insulated, plastic, glass, kids’ and titanium drinkware | OEM, ODM, branding, design and distributor supply | Buyers needing a broad multi-material catalog |
| Everich | Hangzhou, Zhejiang, with multiple production bases | Drinkware, lunch boxes, bags and related products | OEM, ODM, R&D, industrial design and global supply support | Large brands and multi-category sourcing programs |
| Haers | Yongkang, Zhejiang, with multiple manufacturing bases | Stainless steel, titanium, glass, plastic and smart drinkware | OEM, ODM, engineering, industrial design and smart-product development | Large-scale and technically demanding projects |
| KingStar | China manufacturing with a Shanghai contact office | Stainless steel bottles, tumblers, food containers and coolers | OEM, ODM, mold development, prototyping, finishes and packaging | Custom structures and engineering-led projects |
| Shiqiang | Yongkang, Zhejiang | Vacuum flasks, water bottles, mugs, food containers and jugs | OEM, ODM, tooling, injection molding, metal production and assembly | Projects requiring coordinated bottle and plastic-part production |
| Sibottle | Ningbo office; Wuyi and Yongkang production locations | Stainless steel bottles, tumblers, mugs and cups | Turnkey design, prototyping, manufacturing, branding and delivery | SMEs, e-commerce sellers and private-label programs |
| Warmus | Yongkang, Zhejiang | Vacuum flasks, tumblers, travel mugs and water bottles | OEM, ODM, logo, color, finish, packaging and product adjustments | Brand, wholesale, gift and promotional drinkware projects |
| Xiongtai | Yongkang, Zhejiang | Vacuum bottles, tumblers, food jars, carafes and kids’ bottles | Large-scale manufacturing, metalworking, injection molding and surface finishing | Large retail, brand and repeat-volume programs |
The “potential fit” column helps buyers create an initial shortlist. Actual availability, customisation requirements, MOQ, and production arrangements should be confirmed with each supplier.
Ansheng
Website:https://www.ansune.com/
Zhejiang Ansheng is a Yongkang manufacturer specialising in stainless steel vacuum-insulated drinkware and food containers. Its product range includes bottles, mugs, tumblers, barware, and thermal food containers, supported by production operations in China and Malaysia.
Ansheng’s main strengths are large-scale manufacturing, automated production, product development, and laboratory testing. It provides OEM and ODM services from design and engineering through sampling and mass production, making it suitable for established brands, large retailers, and importers managing substantial or technically structured drinkware programs.
FlaskWholesale
Website:https://www.flaskwholesale.com/
Founded in 2019 in Yongkang, FlaskWholesale specialises in custom stainless steel bottles, tumblers, mugs, jugs, shaker bottles, and can coolers. It supports brands, wholesalers, cafés, promotional suppliers, corporate-gift companies, retailers, and e-commerce sellers with both existing products and OEM/ODM development.
FlaskWholesale’s custom drinkware services support flexible, scalable customisation. Buyers can start with selected stock models and low-MOQ logo branding, then add retail packaging, labels, custom colours, lid options, surface finishes, or private moulds as the project grows. Services include laser engraving, screen printing, UV printing, colour finishing, packaging development, private labelling, sampling, quality control, and export support, providing a clear path from a small market test to a complete branded drinkware line.
Diller
Website:https://www.dillerbottle.com/
Guangzhou Diller Daily Necessities Co., Ltd. was founded in 2009 and works across product development, manufacturing, branding, and export supply. Its range extends beyond stainless steel insulated bottles to plastic, glass, sports, gift, baby, kids’, business, and titanium drinkware, with a Guangzhou showroom and production operations in Zhaoqing.
Diller’s main advantage is product variety. Distributors and retailers can develop adult, children’s, sports, gift, and premium collections through one supplier. OEM and ODM services include logo application, colours, design adjustments, sampling, packaging, and mass production, making Diller a useful option for buyers building a broad multi-material drinkware range.
Everich
Website:https://www.everich.com/
Everich was established in 2000 and has developed into a group covering drinkware design, manufacturing, brand development, and international supply. Its portfolio includes stainless steel vacuum bottles, plastic drinkware, lunch boxes, outdoor products, bags, and small appliances, supported by production bases in China and overseas.
The company is particularly strong in industrial design, R&D, material options, automated production, and multi-category sourcing. Its OEM and ODM services cover concept development, product engineering, customisation, packaging, and bulk manufacturing. Everich may suit larger brands, supermarkets, and importers that need broad product coverage and international supply-chain support.
Haers
Website:https://www.haers.com/
Founded in 1985, Zhejiang Haers Vacuum Containers is a large, publicly listed drinkware manufacturer with multiple manufacturing bases. Its product range covers stainless steel, titanium, Tritan, glass, aluminium, and plastic drinkware, along with thermal food containers and smart hydration products.
Haers combines large-volume manufacturing with industrial design, structural engineering, smart-product development, and intellectual-property support. Buyers can choose ODM customisation based on existing models or use its OEM route for new-product development. It is a strong candidate for enterprise buyers, major retail programs, complex bottle structures, and projects requiring substantial engineering and production capacity.
KingStar
Website:https://www.waterbottle.tech/
KingStar Industries focuses on vacuum-insulated stainless steel bottles, tumblers, coffee products, food containers, growlers, and related vessels. Its manufacturing services cover body forming, stamping, injection-moulded parts, coatings, painting, vacuum processing, product testing, assembly, and packaging.
KingStar is especially relevant to engineering-led projects. It supports custom bottle bodies, lids, colours, graphics, logos, packaging, 3D drawings, prototypes, and mould development. This concept-to-production service makes it suitable for brands that need structural changes, exclusive components, or a more differentiated product than a standard bottle with a logo.
Shiqiang
Website:https://www.shiqiang.cn/
Founded in 2001, Yongkang Shiqiang Hardware Plastic Co., Ltd. produces vacuum flasks, insulated bottles, travel mugs, coffee products, food containers, jugs, and related stainless steel drinkware. Its location in Yongkang gives it access to an established drinkware and hardware supply chain.
Shiqiang’s main advantage is its combination of stainless steel production, tooling, plastic injection moulding, hardware processing, and assembly. This integrated service is useful for projects involving custom lids, handles, moulded accessories, or multi-component bottle systems. It supports OEM and ODM development from tooling and component production through final assembly and export supply.
Sibottle
Website:https://sibottle.com/
Sibottle specialises in stainless steel water bottles, tumblers, mugs, and cups, with a Ningbo commercial office and production resources in Wuyi and Yongkang. Its product catalogue includes a wide selection of existing bottle and tumbler designs for retail, e-commerce, promotional, and corporate-gift markets.
Its strength is turnkey project coordination. Services cover product selection, design support, prototyping, custom colours and logos, packaging, manufacturing, inspection support, and delivery. Sibottle may suit small and medium-sized businesses that want a broad model selection and one team to guide a private-label project from initial requirements to shipment.
Warmus
Website:https://warmus-cn.com/
Founded in 2001, Yongkang Warmus Metal Products Co., Ltd. specialises in insulated drinkware, including vacuum flasks, bottles, tumblers, travel mugs, coffee products, sports bottles, kids’ drinkware, home containers, and selected Tritan products. Its catalogue is organised around practical use scenarios such as coffee, sports, travel, home, and children’s collections.
Warmus provides OEM and ODM services covering existing-model customisation, logos, colours, surface finishes, packaging, product adjustments, and bulk production. Its structured product range makes it a useful option for brands, wholesalers, distributors, and gift suppliers that want to build coordinated drinkware collections from established designs.
Xiongtai
Website:https://www.chinaxiongtai.com/
Zhejiang Xiongtai Houseware is a large Yongkang manufacturer of stainless steel vacuum containers and double-wall insulated drinkware. Its range includes sports bottles, tumblers, mugs, food jars, carafes, kids’ bottles, and titanium drinkware under different product series.
Xiongtai’s strengths are production scale and integrated manufacturing. Its operations cover metalworking, plastic injection, surface finishing, assembly, and high-volume output. The company is well suited to large retail, established brand, and repeat-order programs that require substantial capacity, broad product coverage, and consistent mass-production support.
How Should Buyers Choose Between These Suppliers?
The appropriate supplier is not necessarily the company reporting the largest factory or the longest history. It is the company whose service model matches the project.
For a private-label launch, existing moulds, available colours, branding methods, packaging support, and manageable inventory risk usually matter more than deep engineering capability. Buyers should compare the supplier’s stock or established models and ask exactly which parts can be changed without new tooling.
For a custom OEM product, the evaluation changes. Industrial design, lid engineering, prototyping, tooling ownership, IP protection, tolerance control, reliability testing, and change management become more important. A low initial unit price has limited value if the supplier cannot control a new structure through repeated samples and mass production.
Large retailers and distributors should also evaluate production capacity, social-compliance audits, quality systems, traceability, contingency planning, and the supplier’s ability to maintain the same specification over repeat orders. If production may occur at more than one facility, the purchase agreement should identify the approved factory and require authorisation before a production-site change.
What Should You Verify Before Placing an Order?
Start with a written product specification rather than asking each supplier for its “best price.” The specification should cover bottle capacity, stainless steel grade and thickness, inner and outer construction, lid material, sealing components, coating, logo process, packaging, intended use, target market, and required testing.
Ask for a sample that represents the proposed materials and process. If the sample is handmade or produced on a pilot line, clarify which characteristics may differ in mass production. Establish a signed reference sample, colour standard, packaging sample, and measurable acceptance criteria before the bulk order begins.
Supplier claims should also be verified. Request the business license, factory address, audit report where relevant, and copies of certificates or laboratory reports issued to the correct legal entity. A logo displayed on a website does not establish that a report covers the selected bottle or current production facility.
Finally, define quality control in advance. Depending on the project, this may include material verification, dimensions, leak testing, insulation testing, coating adhesion, abrasion, dishwasher resistance, drop testing, food-contact testing, and pre-shipment inspection. The correct test plan depends on the product and market; not every order requires every test.
Frequently Asked Questions
Which company is the best insulated water bottle supplier in China? +There is no single supplier that is best for every buyer. A large engineering-led manufacturer may be suitable for a high-volume custom product, while a more flexible supplier may be better for private labeling or a market-test order. Compare suppliers against the same specification, quantity, testing plan, budget, and required customization.
What is the usual MOQ for custom insulated bottles in China? +MOQ depends on whether the order uses a stock model, custom logo, new color, special packaging, modified lid, or completely new mold. Different decoration processes also have different setup requirements. Ask for a model-specific quotation and confirm whether the stated MOQ applies per design, color, size, or shipment.
How can I confirm that a supplier is a real manufacturer? +Review the legal company name, business license, factory address, production videos, audit documents, and manufacturing process. A live video call or on-site audit can help confirm equipment and current production. Also ask which processes are completed internally and which are subcontracted. Some capable suppliers combine their own production with approved partner factories, so the key issue is transparency and control.
Should I choose OEM or ODM for my bottle project? +ODM is generally more practical when you want to select an existing product and customize its logo, color, finish, or packaging. OEM or custom development is more appropriate when you need a new body, lid, structure, or function. OEM normally requires more tooling, testing, development time, and order commitment.
What documents should I request before mass production? +Depending on the project, request a final specification sheet, approved sample record, quotation, purchase agreement, artwork approval, Pantone or finish standard, packaging drawing, material information, testing plan, and relevant factory or product reports. For custom molds, the agreement should also define mold ownership, maintenance, exclusivity, and access to design files.
Final Advice
This list should be used to create a shortlist, not to replace supplier due diligence. The ten companies differ in scale, product range, engineering depth, MOQ structure, and buyer profile. Select several suppliers whose capabilities match your project, send them the same specification, and compare the quality of their questions as carefully as their prices.
A strong supplier will identify unclear requirements, explain which processes affect cost and consistency, and confirm what must be tested before production. That is usually more valuable than a quotation that promises every option without discussing the technical or commercial trade-offs.