The company’s own history states that its founder began operating in the vacuum-flask business in Yiwu, established the Longfeng Vacuum Flask business in 2004, and registered the DAYDAYS brand that same year. Zhejiang Weilai Daily Necessities Co., Ltd. was subsequently established in 2011.

The roots of DaYDaYS are closely connected with Yiwu, Zhejiang Province, one of China’s major centres for small commodities and international wholesale trade.

According to the manufacturer’s published history, the business began with vacuum flasks in Yiwu’s traditional marketplace. In 1996, the founder entered the vacuum-flask business. In 2004, the business moved into Yiwu International Trade City and established the Longfeng Vacuum Flask Firm, while also registering the DAYDAYS brand and beginning participation in the Canton Fair 1.

The company later developed into Zhejiang Weilai Daily Necessities Co., Ltd., expanding beyond simple thermos production into product development, manufacturing, domestic sales, and international trade. The company’s current website describes its business as covering the development, production, and sales of cups and flasks.

A company profile also identifies Zhejiang Weilai Daily Necessities Co., Ltd. as a company founded in 2011, with its headquarters and business base in Yiwu.

Simplified timeline

• 1996 — Founder enters the vacuum-flask business in Yiwu.
• 2004 — Longfeng Vacuum Flask business established in Yiwu International Trade City; DAYDAYS brand registered.
• 2007 — Zhejiang Weilai Daily Necessities Co., Ltd. established according to the company’s English-language history.
• 2011 — Company and e-commerce expansion alongside broader international exhibition activity; Chinese corporate databases list the current Zhejiang Weilai company as established on 3 August 2011.
• 2010s–2020s — Expansion of thermalware products and international distribution.
• 2020s — Company describes its products as being exported to over 100 countries and reports more than 100 independently designed or patented products.

There is a slight discrepancy in publicly available descriptions regarding the company’s founding dates because the business traces its origins to 1996, while the present corporate entity is associated with 2011. These should therefore be understood as business history versus current-company incorporation, rather than necessarily contradictory dates.

The company most strongly associated with DaYDaYS is Zhejiang Weilai Daily Necessities Co., Ltd.

The company describes itself as a modern manufacturer specialising in the cups and flasks industry, with activities spanning product development, manufacturing, and sales. Its product portfolio includes:

• Coffee pots
• Air-pump pots
• Thermos flasks
• Vacuum flasks
• Other insulated drinkware

It also offers OEM/ODM services, including customised packaging, patterns, logos, colours, and product designs 2.

Chinese business listings place the company at Dongyuan Industrial Park, Jiangdong Street, Yiwu, Jinhua, Zhejiang 3.

DaYDaYS is best understood as a thermalware and household drinkware brand, rather than a general fashion or lifestyle brand. Its traditional core products include:

Thermos flasks

These are among the brand’s signature products. Different models have used glass or stainless-steel inner containers, with designs ranging from traditional household vacuum flasks to larger-capacity products.

Vacuum bottles

The company manufactures vacuum-insulated bottles intended to maintain the temperature of hot or cold beverages.

Coffee pots

Coffee pots form another major part of the company’s product portfolio, including household and hospitality-oriented designs.

Air-pump pots

DaYDaYS also produces pump-style insulated beverage dispensers, commonly used for hot water, tea, and coffee.

Insulated food and beverage containers

The brand has also been associated with thermal containers and other household products designed around temperature retention.

A current manufacturer description explicitly lists coffee pots, air-pump pots, thermos flasks, and vacuum flasks as its principal products.

DaYDaYS appears to occupy a mass-market, value-oriented position rather than competing primarily as a luxury premium brand.

Chinese descriptions of the brand emphasise cost performance, quality, variety, and appearance. One company profile describes the brand as focusing on thermalware while seeking to provide comparatively high-value household water products.

Its positioning can therefore be summarised as practicality, affordability, thermal performance, product variety, and contemporary design. This is particularly suited to the international household-goods and wholesale market, where products need to combine reasonable pricing with visually attractive designs.

Product design is an important part of the DaYDaYS business model.

The company says it has a professional design team responsible for developing new products and improving their appearance and functionality. It also promotes its ability to develop customised products for customers through OEM/ODM manufacturing.

The company currently claims:

• More than 100 patented products
• Exports to over 100 countries
• Independent product development
• OEM/ODM customisation
• International and domestic sales channels

This helps explain why DaYDaYS products can look quite different from one another: the brand has historically served both its own branded market and broader manufacturing and wholesale requirements.

International trade has been central to the development of DaYDaYS.

Company and industry profiles state that DAYDAYS products have been exported to markets including Europe, North America, Southeast Asia, the Middle East, and Africa 4. Older company descriptions mention exports to dozens of countries, while the current company website claims exports to more than 100 countries.

The brand’s participation in international trade also goes back considerably: the company’s history records its participation in the Canton Fair after the DAYDAYS brand was established 5.

Yiwu is particularly important to understanding DaYDaYS.

Yiwu is internationally known for its enormous wholesale ecosystem for consumer goods, and the company has operated from the city for decades. The manufacturer’s website describes Yiwu as a major international trading centre and identifies its location there as an important part of its business model.

Consequently, DaYDaYS has historically had characteristics typical of successful Yiwu consumer-goods brands: manufacturing, product development, wholesale, export, OEM/ODM, and international distribution. Rather than relying exclusively on a highly centralised retail brand model, the business has developed through the global household-goods supply chain.

The brand is encountered under several typographical forms:

• DAYDAYS
• DAY DAYS
• DaYDaYS

Trademark records show DAYDAYS associated with Zhejiang Weilai Daily Necessities Co., Ltd. in at least some markets. For example, Nepal’s industrial-property bulletin records DAYDAYS as a mark belonging to Zhejiang Weilai Daily Necessities Co., Ltd.

There are also trademark records involving Yiwu Longfeng Vacuum Bottles Firm, reflecting the historical relationship between the DAYDAYS brand and the earlier Longfeng business. A 2024 Djibouti trademark publication, for example, records a stylised DAyDAyS mark owned by Yiwu Longfeng Vacuum Bottles Firm.

This suggests that the brand’s trademark ownership and history can vary by jurisdiction and corporate entity, so it would be inaccurate to assume that every international trademark record represents a completely separate brand.

DaYDaYS products encountered in international marketplaces include traditional household vacuum flasks, stainless-steel thermal bottles, large-capacity thermos vessels, and glass beverage pitchers.

For example, marketplace records identify DaYDaYS products using capacities such as 1.5–2 L and 2–3 L, with materials including glass and stainless steel.

The brand therefore has a notably broad product spectrum, ranging from traditional Chinese-style household thermos products to more contemporary drinkware.

The company emphasises several principles in its public materials:

• Product quality
• Product development
• Functional design
• Appearance and design
• Variety
• International customer service
• OEM/ODM flexibility

Its stated corporate philosophy revolves around pursuing product trends, continuous innovation, and responding to customer requirements, while emphasising quality and product-style diversity as competitive advantages.

DaYDaYS is not generally positioned in the same global consumer-brand tier as names such as Thermos, Zojirushi, or Stanley. Its historical strength is instead in the household thermalware and international wholesale and export market.

That distinction is important. DaYDaYS has a substantial manufacturing and export background, but its brand visibility can vary significantly by country. In some markets, consumers may encounter DAYDAYS products through supermarkets, importers, distributors, or online marketplaces rather than through a large standalone retail network.

Company profiles claim that DAYDAYS products have entered large supermarkets in multiple countries and have developed international distributor relationships.

One historical issue is worth mentioning in a comprehensive brand profile.

In 2016, an EU/RAPEX safety notification concerned a DAYDAYS 1-litre food jar and thermos flask, model X15629, originating in China. The notification classified it as a serious chemical risk because asbestos fibres were reportedly present in separators in the double-glass wall. Authorities ordered a ban on marketing the affected product.

This was a specific product and model subject to historical regulatory action, not evidence that all DaYDaYS products have the same problem. It is nevertheless included here because it is an externally documented safety event associated with the DAYDAYS name.

Zhejiang Weilai’s business has also been associated with other brands. A company recruitment and profile page lists DAYDAYS, SUNLIFE, and FEENIK among its brands, while the company’s own history records the establishment of FEENIK in Germany and China.

This indicates that DaYDaYS is part of a broader product and brand portfolio rather than the company’s only commercial identity.

DaYDaYS is best described as an established Chinese thermalware and household drinkware brand originating from Yiwu, Zhejiang. Its roots go back to the vacuum-flask trade of the 1990s, with the DAYDAYS brand being registered in 2004. It subsequently became associated with Zhejiang Weilai Daily Necessities Co., Ltd., expanding into manufacturing, product development, international export, and OEM/ODM services.

The brand’s historical identity is built around thermoses and vacuum-insulated household products, particularly products intended for hot water, tea, coffee, and other beverages. Its competitive proposition has generally emphasised affordability, practical functionality, product variety, and design, rather than luxury positioning.

Its international footprint is one of its defining characteristics: the manufacturer currently states that its products reach over 100 countries, while older company descriptions document exports across Europe, America, Southeast Asia, the Middle East, and Africa.

DaYDaYS (DAYDAYS) is a Chinese Yiwu-based household thermalware brand, established commercially in the 2000s from a longer-standing vacuum-flask business, best known for thermos flasks, vacuum bottles, coffee pots, and insulated beverage containers sold through domestic and international distribution.

Official manufacturer: Zhejiang Weilai / Veley official website

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