Partner factories hold OEKO-TEX® Standard 100 and BSCI · Sourcing partner in the underwear trade since 2009 [email protected] WhatsApp +86 186 5081 3853
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Xiamen Unitex Trade Co., Ltd. is a professional underwear sourcing & supply-chain management company based in Xiamen, Fujian Province, in the Xiamen–Quanzhou–Jinjiang knitwear cluster of south-east China. Founded by Will Lin, who has worked in the apparel trade since 2004, the company has been exporting since 2009 and was incorporated in Xiamen in 2013. It runs its own liaison office in Jinjiang and works with a network of BSCI & OEKO-TEX Standard 100 certified partner factories to serve retailers and brands across Europe, the US and Australia.

Women’s health has a lot to do with private parts protection. More attention should be paid to the choice of underwear. Women love beautiful, cute and sexy underwear. In order to realize the fashion and diversification of underwear design, various materials are used, and harmful chemical components will inevitably enter the production process. With the improvement of people’s health awareness, many environmentally friendly underwear have appeared on the market, which are very popular among female friends, especially women over 26 years old and fashionable hot moms, who have a stronger awareness of health protection.

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In the past, I used to wear pure cotton underwear, but now there are many new varieties, such as bamboo fiber and modal. These new terms are dazzling. What are the differences between them? What are the advantages and disadvantages of each?

To understand the difference in fabrics, start by understanding its raw materials

The characteristics of raw materials determine the characteristics of this fabric. This is like diet therapy. The characteristics of food itself determine its efficacy in diet therapy.

–Cotton Fabric

Using cotton as raw material, through the loom, the textiles are interwoven with warp and weft yarns vertically and horizontally. Cotton fibers are thinner and have natural curls, and the cross-section has a middle cavity, so they have better warmth retention and strong heat storage capacity. The cotton fiber itself has the advantages of porosity and high elasticity, and a large amount of air can be accumulated between the fibers, so pure cotton fiber textiles have good warmth retention. What we usually refer to as cotton is the fiber inside the fruit that is cracked and turned out when the fruit grown after cotton blooms and matures. It is pure plant fiber, has no nutritional content, and is not easy to breed bacteria. Therefore, the material used to make women’s underwear is very beneficial to women’s health.

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The advantages of pure cotton fabric: sweat-absorbing, warm, natural and non-irritating, hygienic, washable and durable.

Disadvantages of pure cotton fabric: it is easy to wrinkle, and it is difficult to smooth out after wrinkling. Easy to shrink, the shrinkage rate of pure cotton clothes is 2% to 5%, except for special processing or washing water treatment. Easily deformed, lack of elasticity, pure cotton clothes will be easily deformed, especially summer clothes, because the fabric is relatively thin. Easy to stick hair, difficult to remove completely. (Note: What we usually call pure cotton refers to cotton fabrics with a cotton content of more than 75%)

–Modal

Modal is a cellulose regenerated fiber of high wet modulus viscose fiber developed by Austrian Lenzing Company. The process is processed into fibers. The raw materials of this product are all natural materials, which are harmless to the human body and can be decomposed naturally (so people who often wear modal underwear will find that the underwear will become thinner and more translucent), and it is harmless to the environment. The raw material of Modal fiber is produced in European shrubs, which is a kind of cellulose fiber, so it belongs to cellulose fiber like cotton and is a pure natural fiber.

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The advantages of modal cotton: smooth, delicate, good drapability, silky luster and hemp smoothness. Good breathability and water absorption. Bright color, wear-resistant and anti-wrinkle, strong elasticity. It has a high dyeing rate, the fabric color is bright and full, and the color separation of the printed pattern is clear.

Disadvantages of modal cotton: napping phenomenon, which affects the appearance and style of the fabric.

–Bamboo Charcoal Fiber

Taking moso bamboo as raw material, adopting the new calcination process and new technology of pure oxygen high temperature and nitrogen barrier delay, which can make the functions of bamboo charcoal 100% play out. Bamboo charcoal has a porous structure, its molecules are fine and porous, and its quality is hard. It has strong adsorption capacity, can purify the air, eliminate peculiar smell, absorb moisture, prevent mildew, inhibit bacteria and repel insects. Contact with the human body can dehumidify and absorb sweat, promote human blood circulation and metabolism, and relieve fatigue. Bamboo fiber textiles are favored by consumers because they completely replicate the inherent characteristics of bamboo fiber. It is the fifth largest natural fiber after cotton, linen, wool and silk.

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The advantages of bamboo charcoal fiber: good hygroscopicity, good antibacterial, antibacterial and bactericidal effect, anti-ultraviolet, soft and smooth.

Disadvantages of bamboo charcoal fiber: fragile. Bamboo fiber fabrics cannot be twisted hard, otherwise they will be easily damaged. In order to overcome this weakness, the method of blending bamboo fiber and cotton fiber is generally adopted to improve the strength. The ratio of bamboo to cotton in bamboo charcoal fiber underwear is generally 7:3.

In fact, the above three fiber fabrics are excellent choices as underwear fabrics, and have their unique and common advantages in terms of women’s health. There are also disadvantages. Female friends can choose which fabric underwear to choose according to their actual needs. Mainly antibacterial and sterilizing, bamboo charcoal fiber can be considered. It is mainly natural, warm and sweat-absorbing, and pure cotton can be considered. Modal can be considered for those that are elastic, smooth, comfortable and require bright colors.

· Xiamen Unitex Trade Co., Ltd. — OEM & ODM underwear sourcing partner

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Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.
Supplier Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — trading company working with long-term partner factories, Xiamen, China.
Fibre 1 Cotton — the volume base; breathable, comfortable, relaxes with wear unless blended
Fibre 2 Modal — regenerated cellulose; softer hand, better shape retention, higher cost
Fibre 3 Bamboo (including bamboo charcoal) — moisture movement with a sustainability claim attached
Comparison basis Blend ratio and weight in g/m² rather than the fibre name
What differs Hand, recovery, moisture behaviour and cost — not a quality ranking
Bamboo charcoal note A processed variant rather than the raw fibre, with its own claim considerations
Wash behaviour Differs by fibre, which affects the care instruction
Selection driver The market the range sells into rather than a preference
Claim requirement A documented basis for any sustainability or functional claim
Verification Wash test on the actual blend rather than on the fibre alone

Buyer checklist

  • Compare the three on the same weight rather than on the fibre name.
  • Specify the blend ratio to the percentage.
  • Confirm the processing route before any sustainability claim.
  • Check the wash behaviour of each on the actual construction.
  • Confirm the care instruction against the blend.
  • Ask for a test behind any functional claim about bamboo charcoal.
  • Compare on landed cost against the cotton alternative.
  • Check whether the market pays for the position each fibre supports.
  • Confirm the fibre and percentage per style in the tech pack.
  • Approve on a washed production sample.

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.)

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.

Sources & references

  1. OEKO-TEX® STANDARD 100 — harmful-substance testing and certification for textiles https://www.oeko-tex.com/en/our-standards/oeko-tex-standard-100
  2. ICAC — International Cotton Advisory Committee https://icac.org/
  3. ASTM — textile standards and test methods https://www.astm.org/
  4. OEKO-TEX® Label Check — verify a certificate number at the issuing body https://www.oeko-tex.com/en/label-check/
  5. ISO 3758:2023 — Textiles: care labelling code using symbols https://www.iso.org/standard/74401.html
  6. US FTC — Clothing and Textiles: labelling and advertising guidance https://www.ftc.gov/business-guidance/industry/clothing-and-textiles
  7. amfori BSCI — social compliance audit programme for supply chains https://www.amfori.org/amfori-bsci
  8. ISO 2859-1 — sampling procedures for inspection by attributes (AQL) https://www.iso.org/standard/2859-1

Unitex Underwear (Xiamen Unitex Trade Co., Ltd.) — OEM/ODM underwear sourcing and supply-chain partner in Xiamen, China; in the trade since 2009, incorporated in 2013. Based in the Xiamen–Quanzhou–Jinjiang knitwear cluster, Fujian Province, south-east China.

Buyer Questions

MOQ, lead times, certification and trading terms

They differ in hand, recovery, moisture behaviour and cost rather than in a quality ranking. Cotton gives a drier hand at a lower cost, modal a softer hand with better shape retention, and bamboo moves moisture well with a sustainability claim attached. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

It is different rather than better. Bamboo moves moisture well and carries a sustainability story, while cotton offers a drier feel and a lower cost base. Which suits a range depends on the market it sells into rather than on the fibre itself. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

It is a processed variant rather than the raw fibre, produced by incorporating charcoal into the fibre or the finish. Because it is a treatment as much as a fibre, any functional claim about it needs a test result rather than a description. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

On the same weight and the same blend ratio, not on the fibre name. A lighter cotton and a heavier modal are not comparable products, and the difference in the comparison often comes from the weight rather than from the fibre. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

They do, which is why the care instruction follows the blend rather than the dominant fibre. Modal is less abrasion-resistant than cotton, and bamboo behaves differently again — so a label written for one can be wrong for another. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

From the market rather than from a preference. Each fibre justifies its position in a specific segment, so the useful question is which segment the range serves — and most successful ranges carry more than one rather than choosing between them. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).