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Rang Dong’s Teapot Vacuum Flask Offers More Than Good Drink

October 2nd, 2023

Tea culture has been playing an important role in many countries for a very long time. In the past, people had some simple ways of retaining the heat for tea, such as using tea cozy made from rice hulls. Nowadays, supported by technology, Vietnamese manufacturer Rang Dong has created a teapot vacuum flask with full advantages to well meet tea drinkers’ demand.

Remarkable advantages

Long heat retention

Enjoying tea at home is a daily simple process by millions, but one of their most concerns related to the teapot vacuum flask is its heat retention capability. The teapot vacuum flask produced by Rang Dong can keep heat above 78 degrees Celsius after six hours, while retaining cold drinks cool for at least 24 hours. 

That is an outstanding advantage compared to other teapots. With this teapot’s long heat retention, consumers save not only the cooking time, but also the fuel, i.e. gas or electricity, thus cutting down the monthly bills.

No mercury and arsenic in glass refill ingredients

Mercury and arsenic are the two popular ingredients used in glass production. According to research, mercury and arsenic can vaporize if they are put under high temperature. Rang Dong,  Vietnam’s leading manufacturer of vacuum flask products, has invented a method to remove mercury and arsenic from the ingredient for making glass. All Rang Dong’s glass refills for teapots have no mercury or arsenic, thus protecting well user's health.

A sample of Rang Dong’s teapot model 1542 N2


Frequent use of the teapot often shortens its lifespan and the thermal quality. Each of Rang Dong’s teapot vacuum flasks undergoes a 30-day quality control testing to minimize the impact of the number of using times on the teapot lifespan. 

On the other hand, the production line technology transferred from a Japanese supplier helps prolong the lifespan, while the silver-coated technology increases the heat retention capacity. These factors helped raised Rang Dong’s teapot vacuum flasks to the top rank in the market against competitors.


Rang Dong’s teapot is suitable for many kinds of tea. The most common way is to boil water and pour it over the tea bag or steep the tea leaves in the teapot. Just within several minutes, the tea is ready. The hand-held design makes it easy to carry the teapot around.

Rang Dong’s teapot model 1055 N1.E

The round lid with a 360-degree turn prevents any leakage during transportation. The large opening of the teapot mouth makes filling and cleaning easily. Ice cubes can be added for extra cold refreshment. The teapot’s outer body stays cool even when it is filled with hot liquid, and it remains condensation-free while keeping cold beverages. 

The modern design helps keep harmony with our kitchen or the living room’s table, making it perfect for home or office daily use. Besides, it also makes a meaningful and luxurious gift for holidays and anniversaries. A wide range of capacities is made available for customer’s choice.

Retaining fresh taste

Have you ever carefully prepared a beverage the night before only to find its taste terrible in the morning? Or else, one day you are going out under hot weather, and reach your cold water bottle but only find out it is as hot as you.

Rang Dong’s teapot model RD 1565 N1.E

Normally, tea will change the taste after a short time when it cools. The teapot vacuum flask helps retain the heat and the fresh taste, so it is especially suitable for the tea that needs to be soaked for a long time to get a tasty flavor. With the teapot, now we can enjoy our tea any time.

Rang Dong’s reputation

Rang Dong is proud to be honored as Vietnam’s leader in vacuum flask production as per the Vietnamese Ranking Report. The Hanoi-based company’s vacuum flask has an 85-percent market share in Vietnam and its teapot vacuum flask is one of the best-selling products. Rang Dong has been exporting teapot vacuum flasks to some 22 countries around the world, including South Korea, Singapore, France, Iran and Saudi Arabia.

With more than 60 years of experience in the field of vacuum flask production in general, and of teapot vacuum flasks in particular, Rang Dong is confident in having mastered the technology and stays dedicated to customer’s service. The company’s mission is to supply safe vacuum flasks to protect human health while ensuring happiness.

Should you have any questions, wish to share your ideas about vacuum flasks or request a quotation, please send us an email to: export@rangdong.com.vn.

Our website: vacuumflask.rangdong.com.vn

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