Vacuum Insulated Thermos Manufacturer

Vacuum Insulated Thermos Manufacturer | ISO-Certified OEM

Precision Vacuum Insulated Thermos Manufacturing for Industrial and Commercial Excellence

In the realm of temperature retention, the Vacuum Insulated Thermos stands as a testament to human ingenuity, merging science with everyday utility. At Zhejiang Gint Vacuum Flask Technology Co., Ltd., we have elevated this iconic product to new heights of performance and reliability. Our Vacuum Insulated Thermos is not merely a container; it is a precision-engineered solution designed for industries that demand unwavering thermal efficiency, durability, and customizability. From high-volume food service operations to demanding outdoor equipment brands, our thermoses are crafted with advanced double-wall insulation and cutting-edge manufacturing processes that ensure optimal heat retention for hours on end. ISO-certified since 2015, our facility employs state-of-the-art vacuum technology and rigorous quality control measures, guaranteeing that every unit meets international standards. Our commitment to customization allows clients to tailor every aspect of the thermos—from capacity and

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Advantages of the product

Advanced Double-Wall Insulation Technology

Our Vacuum Insulated Thermos utilizes a sophisticated double-wall construction with a vacuum-sealed layer that virtually eliminates heat transfer through conduction and convection. This results in superior temperature retention, keeping beverages hot or cold for up to 24 hours, depending on the model. The aerospace-grade stainless steel used in the inner and outer shells provides exceptional strength while maintaining a sleek, lightweight profile. This technology ensures that your drinks maintain their original taste and temperature, whether you are on a construction site in winter or a beach in summer. Unlike ordinary thermoses, our vacuum insulation is meticulously tested under extreme conditions, ensuring consistency and performance batch after batch. This advantage directly translates to lower energy costs for heating or cooling, enhanced user satisfaction, and a competitive edge in the market. Additionally, the double-wall design prevents condensation on the exterior, making it co

Custom Engineering and OEM/ODM Flexibility

We understand that every market segment has unique requirements, which is why we offer extensive customization options that go beyond basic logos. From choosing the optimal capacity (ranging from 200ml to 2000ml) to selecting the type of stainless steel (304 or 316L) and surface finish (matte, glossy, powder-coated), we tailor each Vacuum Insulated Thermos to your precise specifications. Our in-house engineering team can modify dimensions, add integrated handles or carabiner loops, design special spouts for easy pouring, and even incorporate smart features like temperature displays. We also support a wide array of branding techniques, including silk-screen printing, laser engraving, and full-wrap digital printing, ensuring your brand stands out. With low minimum order quantities and rapid prototyping, we make it easy for startups and established enterprises to launch customized products with confidence. This flexibility empowers our clients to differentiate themselves in a crowded mark

ISO-Certified Quality Assurance and Durable Construction

Since 2015, our manufacturing facility has maintained ISO9001:2015 certification, reflecting our unwavering commitment to quality management. Every Vacuum Insulated Thermos undergoes rigorous testing, including vacuum integrity checks, leak-proof tests, and durability assessments to ensure it withstands daily use and harsh environments. We use only food-grade materials that are BPA-free and pass FDA and LFGB standards, guaranteeing safety for all users. The exterior is resistant to scratches, dents, and corrosion, while the interior features an electro-polished surface that resists stains and odors, making clean-up effortless. Our thermoses are designed to last for years, reducing the need for replacements and enhancing brand reputation for reliability. With a warranty that covers manufacturing defects, we stand behind our product, providing you and your customers with peace of mind. This focus on durability not only lowers total cost of ownership but also aligns with sustainability go

In today’s fast-paced world, maintaining the ideal temperature of our beverages is not just a luxury but a necessity. The Vacuum Insulated Thermos has become an indispensable companion for millions, from office workers to outdoor adventurers, because it solves a universal challenge: how to keep coffee hot on a long commute or water icy cold during a scorching hike. At Zhejiang Gint Vacuum Flask Technology Co., Ltd., we have dedicated ourselves to perfecting this solution through innovative engineering and meticulous craftsmanship. Our journey began with a simple mission: to produce the most reliable and efficient Vacuum Insulated Thermos in the market, and over the years, we have achieved this through continuous research and development. The core principle behind our thermos is the creation of a vacuum between two stainless steel walls, which eliminates the three modes of heat transfer—conduction, convection, and radiation—to a negligible level. This results in a product that can maintain temperature for up to 24 hours, a remarkable feat that enhances user experience and convenience. But our commitment does not stop at thermal performance. We also prioritize the overall quality of the product, from the selection of premium stainless steel to the precision engineering of the lid and sealing mechanisms. A thermos is only as good as its least robust component, which is why we invest in high-grade materials and testing procedures that exceed industry standards. Furthermore, we recognize the growing demand for sustainability and health consciousness among consumers. Our Vacuum Insulated Thermos is reusable, reducing reliance on single-use plastic bottles, and our materials are fully recyclable at the end of the product’s life. We also avoid the use of harmful chemicals like BPA, ensuring that your beverages remain pure and safe. For businesses looking to understand the market trends, we observe a shift towards personalization and aesthetics, which is why we offer extensive customization options to help brands stand out. Whether through vibrant colors, unique shapes, or innovative features, our thermos can be adapted to match any lifestyle or brand identity. Moreover, we provide guidance on proper maintenance and best practices to ensure the longevity of the thermos, such as avoiding dishwashers with abrasive detergents and storing with the lid slightly open when not in use. By choosing Gint as your manufacturing partner, you are not just getting a product; you are getting a strategic advantage backed by expertise, innovation, and a passion for excellence. We invite you to explore our full range and see how our Vacuum Insulated Thermos can transform your operations and delight your customers.

Frequently Questions

How long does the Vacuum Insulated Thermos keep beverages hot or cold?

Our thermoses are designed to maintain hot beverages above 60°C for up to 24 hours and cold beverages below 10°C for up to 24 hours, depending on the model and ambient conditions. For example, the Gint Precision Series holds temperature for 18 hours, while our larger capacity models may exceed that. Factors such as initial liquid temperature, amount of liquid, and how often the lid is opened can affect performance. To maximize retention, pre-condition the thermos by filling with hot/ice water for a few minutes before use, and ensure the lid is tightly closed.

What materials are used in manufacturing and are they safe?

We use premium 304 or 316L food-grade stainless steel for both the inner and outer walls. These materials are non-toxic, BPA-free, and resistant to corrosion and rust. They meet FDA, LFGB, and CE standards, ensuring they are safe for food contact. The lid is made of polypropylene (PP) with a food-grade silicone gasket for sealing. All materials are tested to ensure they do not leach any harmful substances into your beverages.

Jul

Gint's 101,320 Sqm Smart Industrial Park Officially Operational, Upgrading Fully Automated Lean Production Lines

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New RedEarth LOOP-075Y: 750ml Vacuum Insulated Stainless Steel Water Bottle

Aug

GINT CEO Jim Qiu to Attend Outdoor Retailer 2026 and Visit U.S. Partners

Customer Testimonials

Sarah Thompson

Reliable Partner for Our Retail Brand

We have been sourcing Vacuum Insulated Thermos from Gint for over two years, and their quality is consistently outstanding. The customer service team is responsive and professional, and their customization options allowed us to create a unique product that our customers love. The thermos has maintained excellent thermal retention in independent tests, and we have received zero complaints. Highly recommend them for any business looking for a trustworthy manufacturer.

Michael Rodriguez

Exceptional Durability and Performance

Our company supplies thermoses to construction crews, and we needed something that could withstand tough conditions. Gint’s thermos has exceeded our expectations. The vacuum insulation works flawlessly even in freezing temperatures, and the stainless steel body is nearly indestructible. The custom engraving with our logo looks professional and has held up well. The team at Gint is easy to work with, and they deliver on time. We are very satisfied.

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Unmatched Retention Time

Our Vacuum Insulated Thermos boasts a retention time of up to 24 hours, thanks to a double-wall vacuum that minimizes heat loss. This is achieved through a high-precision vacuum pumping process that removes all air molecules from the interlayer, reducing thermal conductivity to nearly zero. The result is a thermos that keeps your coffee steaming hot during long night shifts or your iced tea refreshingly cold on a day-long beach trip. Independent tests have verified that our thermos outperforms many competitors by 20% in retention efficiency, making it a top choice for professionals who rely on temperature stability. This highlight ensures that users can enjoy their preferred beverages at the perfect temperature whenever they need, reducing waste and enhancing satisfaction.

Full-Fledged Customization

We take pride in our ability to offer complete customization, from design concept to final product. Our in-house design team can assist with 3D modeling, and we provide a range of options including various capacities, neck diameters, inner coats, and innovative accessories like tea infusers or temperature indicators. We also offer color matching to any Pantone code, and our printing techniques can handle intricate designs with high clarity. Whether you are launching a limited edition or a corporate giveaway, we ensure a seamless process with quick sample turnaround. This flexibility allows our clients to create a Vacuum Insulated Thermos that perfectly aligns with their brand identity and market demands, giving them a competitive edge.