In 2026, China remains the global powerhouse for stainless steel and vacuum flask manufacturing. From OEM bulk orders to high-end custom solutions, the country’s top factories are leading the way in thermal technology, sustainable production, and design innovation.

If you’re looking to source a vacuum thermo flask, vacuum filtration flask, or glass-lined vacuum flask, this guide will help you navigate the best manufacturers available. These factories have proven their expertise in quality, compliance, and large-scale production—making them top choices for importers, Amazon sellers, and global retailers.

🏭 Top 10 China Vacuum Flask Factories in 2026

1. Eastegg Bottle Co., Ltd.

Location: Zhejiang

Founded: 1997

Eastegg Bottle is a top-tier China vacuum flask factory renowned for its advanced production capacity and innovative design solutions. The company operates a modern manufacturing facility with strict quality control systems, serving numerous global brand clients.

• Specialties: High-end vacuum insulated bottles, personalized customization, eco-friendly materials
• Notable Products: Vacuum insulated thumbler, multifunctional thermal mugs
• Production Capacity: Over 20 million units annually
• Certifications: ISO9001, FDA, LFGB, BSCI

👉 Ideal para: Premium brands and Amazon sellers seeking reliable manufacturing partners with strong R&D capabilities.

2. Haers Vacuum Containers Co., Ltd.

Location: Zhejiang

Founded: 1985

Haers is the leading China vacuum flask factory known for its massive production capacity and innovative technology. The company has four global production bases and is among the first in China to develop smart thermos bottles with temperature displays and sensors.

• Specialties: OEM vacuum flasks, smart vacuum bottles, sustainable materials
• Notable Products: Vacuum thermo flask, tea filter flasks
• Certifications: ISO, FDA, LFGB, BSCI

👉 Ideal for: Global retailers looking for high-volume OEM production with top-tier quality.

3.  KingStar Industries Co., Ltd.

Location: Shanghai

Founded: 2002

KingStar has built a solid reputation as a professional vacuum thermo flask manufacturer. Their 30,000㎡ factory houses over 900 skilled workers and advanced robotic welding and polishing systems.

• Specialties: Stainless steel sports bottles, thermal flasks, beer growlers
• Highlight: Excellent QC system and fast prototyping
• MOQ: Flexible for startups and private label buyers

👉 Ideal for: Amazon sellers and DTC brands focused on design and speed-to-market.

4. LaiKoe (Yongkang Duxin Houseware Co., Ltd.)

Location: Yongkang, Zhejiang

Founded: 2006

Known for top-quality finishes and excellent customization options, LaiKoe is a rising China vacuum flask factory with strong OEM/ODM capabilities.

• Products: Insulated flasks, vacuum flask for tea, kid-friendly bottles
• Customization: Laser engraving, hydrographics, embossing
• Markets: North America, EU, Japan

👉 Ideal for: Mid-sized brands seeking stylish, customized thermal solutions.

5. Everich & Tomic Houseware Co., Ltd.

Location: Hangzhou, Zhejiang

Founded: 2000

Everich is one of China’s best-known exporters of vacuum thermo flask and kitchen drinkware. With over 20 years of experience, they serve clients like Starbucks and Target.

• Specialties: Outdoor flasks, glass-lined thermos, ceramic interior bottles
• Compliance: Prop 65, REACH, FDA, LFGB
• Unique Feature: Sustainable bamboo and cork accents

👉 Ideal for: Retail chains needing eco-conscious design options.

6. Golmate Enterprise Limited

Location: Guangzhou

Founded: 2001

Golmate focuses on mid-to-high-end vacuum flask for tea and food jars. Their R&D team develops 30+ new molds every year.

• Product Focus: Glass inner lining, tea infusers, lunch containers
• Strength: Patented anti-leak and temperature lock systems
• Capacity: 4 million units annually

👉 Ideal for: Buyers looking for glass lined vacuum flask with smart tea filtering.

7. Yuehua Vacuum Bottle Factory

Location: Yongkang

Founded: 1998

Yuehua is a full-scale China vacuum flask factory offering in-house production lines from molding to packaging.

• Offerings: Classic vacuum filtration flask, travel mugs, promotional gifts
• Technology: Automatic vacuum testing & thermal performance QC
• Service: Full white-label customization

👉 Ideal for: Wholesalers seeking reliable B2B service and competitive pricing.

8. Shenzhen Packshine Gifts Co., Ltd.

Location: Shenzhen

Founded: 2013

Packshine is an experienced stainless steel water bottle manufacturer with a strong focus in custom molded bottles, developing custom molds for bottle bodies, as well as precision injection-molded lids, silicone gaskets or other bottle accessories. Their engineer-led team would review your 2D CAD or 3D SolidWorks designs—or even rough sketches—offering expert advice on mold feasibility, cost, and refinement for optimal performance and aesthetics.

Packshine also boasts End-to-End Customization Services, offering clients comprehensive options in color, material, finish, logo printing, packaging, etc.

MOQ: Low starting point (as low as 300 pcs)

Materials: 304 grade stainless steel, BPA-free plastic, Tritan, Silicone, Titanium, etc.

Shipping: Fast lead time via Shenzhen or Ningbo port

👉Ideal for: clients who want highly customized products, or clients who look for consultative R&D partnership

9. Bosom Metal Co., Ltd.

Location: Foshan

Founded: 2005

Bosom offers a broad catalog from vacuum filtration flask to double-wall coffee mugs. Known for stable quality and prompt service.

• Certifications: SGS, CE, RoHS
• Features: Leakproof lids, ergonomic handles, laser logo
• OEM Scope: Small MOQ accepted, ready stock available

👉 Ideal for: Small businesses entering thermal product markets.

10. Yongkang Ganghong Industrial Co., Ltd.

Location: Yongkang

Founded: 2008

Ganghong specializes in low-cost, customizable vacuum flask for tea and vehicle mugs for B2B clients.

• Pricing: Among the most competitive in China
• Target Market: Middle East, South Asia, Africa
• Options: Multiple colors, gift box packaging, logo print

👉 Ideal for: Traders looking for cost-effective solutions in large volume.

Industry Trends in 2026

According to IndexBox, China’s vacuum flask industry is projected to grow at a CAGR of 9.1% from 2024 to 2030. Domestic demand is booming, and export volume remains strong, especially for differentiated models like:

• Smart thermos bottles
• Leakproof vacuum filtration flask
• Eco-friendly bamboo-wrapped containers
• Luxury glass-lined vacuum flask for tea culture enthusiasts

Choosing the Right China Vacuum Flask Factory

Sourcing Goal	Recommended Factories
High-end ODM	Haers, KingStar, LaiKoe
Personalización del diseño	Aulandbottle, Everich
Budget MOQ	Bosom, Ganghong
Tea Culture Product	Golmate, Packshine
Filtration Focus	Yuehua, Bosom

Whether you’re targeting coffee drinkers, tea lovers, or the wellness market, aligning your needs with the right manufacturer will be key to brand success.

Conclusion

China continues to be the global leader in vacuum flask production, offering competitive pricing, evolving design trends, and massive output capabilities. From premium vacuum thermo flask manufacturers to entry-level vacuum flasks for tea suppliers, this list provides a clear path for sourcing in 2026.