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.

The underwear market is called “the last piece of cake in the clothing industry”. Clearly, the underwear industry is still an area with huge potential that deserves our investment.

You may have had the idea of starting your own underwear brand for a long time. You may have finished designing underwear and have made up your mind to enter the underwear business. But you just don’t know how to turn your ideas and business into reality, how to customize the underwear you design.

Eight steps from a design drawing to a shipped order

  1. Find the right underwear manufacturer.
  2. Provide your requirements for an initial quote.
  3. Make samples according to your requirements.
  4. Confirm the size and quantity, place the order.
  5. The underwear manufacturer sourced fabrics and accessories.
  6. Pre-production samples.
  7. Start bulk production.
  8. Quality inspection, arrange shipment.

1. Find the right underwear manufacturer

There are two types of underwear factories. One is specialized in making seamless underwear with simple styles and patterns. The other category is more focused on making handmade underwear and can produce underwear in more styles and patterns. So before you choose a factory, you should define whether your underwear is seamless or delicate.

Seamless underwear factories usually buy yarns of different fibers and use machines to weave them into tubular fabrics, which can be made into various types of seamless underwear through simple manual processing. Because seamless underwear is mostly one-piece and has a simple style, the requirements for tailors are relatively low. Therefore, it is difficult for such factories to meet the requirements for delicate underwear.

Ordinary underwear factories focus on the handmade process. They usually buy back fabrics and trims, which workers cut into underwear by hand. So it requires more experienced tailors. If you need delicate and intricate styles of underwear, this type of factory is a better choice.

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2. Provide your requirements for an initial quote.

The next step after the factory is set up is to get a quote. Now you should provide the design drawing of the underwear to the factory, they will quote according to the required fabric, accessories (elastic, thread, bow, wash label, packaging, etc.) and order quantity.

A. Send samples to the factory

If you can provide samples for Chinese underwear manufacturers, it will get more accurate price. Because underwear manufacturers can better understand what fabrics and trims are applied, and the complexity of the process, they can quote you a more accurate and reasonable price. If you find that a piece of underwear is selling well in your competitor’s store, you can design a similar style and have a tailor make a sample before supplying it to the factory.

B. Provide design drawings to factory

If you have your own designer, you can design new styles and the factory will quote you after estimating material and labor costs. After the sample is made, you can get the exact price.

3. Make samples according to your requirements

If the initial quotation looks workable, ask for a sample — but the cost depends on which kind of sample it is. A prototype, meaning one or two pieces or a few pieces pulled from an existing sample set, is normally free: the material cost is negligible and the buyer covers the courier. A salesman sample is a different order of work, with every fabric and trim correct to specification and sampled the way bulk will be run, and that carries a sample fee quoted separately rather than absorbed into the unit price. One size is enough to judge the sewing workmanship.

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Before making samples, if some processes are not suitable for bulk production, the factory manager will give you some suggestions for design drawings and make some changes in some details, because some may not be suitable for bulk production. Once the parties have agreed on the final design, the factory will start making samples.

It takes 7-15 days to make a sample, as the factory needs to find the right fabrics and accessories to match your requirements.

4. Confirm the order quantity, color, delivery date,and place the order and pay the deposit

If you are satisfied with the sample and price, congratulations, you have found the right supplier, and you are closer to your goal. But before placing an order, you still need to confirm many details with the supplier.

A. Confirm the quantity and color of each size

The unit price of the same underwear is the same, no matter how many pieces you buy for each size, the unit price depends on the style and color. However, you should specify the color of each style and the quantity of each size, and then write the color and the quantity of each size on the supplier’s purchase contract or invoice.

B. Confirm the fabric and the color of each trim

In order to avoid color difference, you can provide the color sample of the fabric and accessories to the factory for reference for your confirmation. Or you can provide Pantone color number and ask the factory to make color samples according to the color number you require, so that you can choose the color.

C. Confirm the delivery time of the order

The normal production lead time for an order is three months, but the time of sample confirmation should also be considered.

D. Place an order and sign a contract, issue an invoice and pay a deposit

After the order is confirmed, the two parties sign the contract, the supplier will invoice you to pay the deposit, and the supplier can arrange the order of raw materials only after receiving the deposit.

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5. The underwear manufacturer sourced fabrics and accessories.

After you pay the deposit and confirm all the details, the factory will start to prepare all the fabrics and accessories. Fabric: The factory needs to purchase the yarn of the fabric first, then weave it into grey fabric, and then dye it. If it needs to be printed or embroidered, it needs to go to the printing factory for printing. Accessories: The factory will customize all kinds of accessories that suit your requirements, because the accessories need to match the color of the fabric, or contrast colors. Usually It takes 30–45 days from sourcing the yarn to the finished cloth to get all the materials ready.

6. Pre-production samples

After the bulk fabrics and accessories arrive in the warehouse, you can ask the factory to do the pre-production samples. The material for the pre-production samples is exactly the same as for bulk production, and the pre-production samples should accurately represent the final product you will receive.

Pre-production samples are for you to determine if the supplier meets all criteria. You can check sewing construction, size, fabric, accessory colors and so on. Pre-production samples must be submitted prior to mass production to give you the opportunity to point out any errors or misunderstandings to the supplier.

For women’s briefs, for example, you may notice that the brand label is sewn in the wrong place. Or the factory may have accidentally used an entirely incorrect color of elastic. The factory should have understood the buyer’s requirements. However, problems are often overlooked. It is very important to check pre-production samples before bulk production.

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7. Start bulk production.

If you approve the pre-production samples, the factory will start mass production.

First, they will loosen the fabric before cutting, which prevents shrinkage. Then workers tailor and sew the fabric into underwear in the workshop.

The entire production process runs about 45–60 days for a new style, or 30–40 days on a repeat. It depends on the factory’s order arrangement as the factory receives orders from other customers. It also depends on how sophisticated you expect the underwear to be and how much you order.

Therefore, it usually takes 90 days from the sample of the fabric accessories and the confirmation of the pre-production sample to the purchase of the fabric and the completion of the entire production. In order to prevent the inventory from being replenished in time, it is recommended to purchase a little more each time you place an order, because the entire production cycle of underwear is very long.

8. Quality inspection, arrange shipment

It is very important to check the quality before shipping the goods home. After the mass production is completed, you can ask the supplier to randomly select some samples to send to you or arrange the inspectors to go to the factory for final inspection. If you find that there is no problem with the quality, you can find a freight forwarder to arrange delivery.

Also, if you have a purchasing agent or a third-party quality control agent in China, you can entrust them to help you control the quality. They usually provide services to help you check the quality against AQL inspection standards to ensure the quality of your items.

· 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.
Step 1 Find the right manufacturer — capability, certification and market fit
Step 2 Send requirements for an initial quote; provide a physical sample or design drawings
Step 3 Sampling to your requirements
Step 4 Confirm quantity, colour and delivery date; place the order and pay the deposit
Step 5 Manufacturer sources fabric and accessories
Step 6 Pre-production sample approval
Step 7 Bulk production
Step 8 Quality inspection and shipment arrangement
Sample lead time 7–15 days, depending on fabric and trim sourcing
Bulk production 45–60 days for a new style · 30–40 days on a repeat (current terms)
Deposit 30% on order confirmation as the standard; balance against a copy of the B/L
Inspection standard AQL 2.5 major / 4.0 minor, zero tolerance for critical defects
Specification to fix before ordering Fabric per component · trim colour per component · size breakdown · packing

Buyer checklist

  • Choose the manufacturer before the style — capability and market fit filter the list faster than price does.
  • Send a physical sample or a clear drawing for the first quote; a verbal description produces an unusable price.
  • Confirm the sample stage in writing, with the days attached to it.
  • Fix quantity, colour and delivery date before paying a deposit.
  • Confirm fabric and trim colour per component, not just for the main body.
  • Ask for the pre-production sample and approve it in writing before bulk production starts.
  • Establish who sources the fabric and trims, and what happens if a mill substitution becomes necessary.
  • Agree the inspection standard and who attends the final inspection.
  • Keep the deposit at the standard 30% on order confirmation unless there is a specific reason to differ.
  • Require the packing list and shipping documents against the order, not against the shipment.

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. ISO 3758:2023 — Textiles: care labelling code using symbols https://www.iso.org/standard/74401.html
  2. US FTC — Clothing and Textiles: labelling and advertising guidance https://www.ftc.gov/business-guidance/industry/clothing-and-textiles
  3. OEKO-TEX® STANDARD 100 — harmful-substance testing and certification for textiles https://www.oeko-tex.com/en/our-standards/oeko-tex-standard-100
  4. OEKO-TEX® Label Check — verify a certificate number at the issuing body https://www.oeko-tex.com/en/label-check/
  5. ASTM — textile standards and test methods https://www.astm.org/
  6. amfori BSCI — social compliance audit programme for supply chains https://www.amfori.org/amfori-bsci
  7. ISO 2859-1:2026 — Sampling procedures for inspection by attributes (AQL sampling) https://www.iso.org/standard/2859-1
  8. ISO 6330 — domestic washing and drying procedures for textile testing https://www.iso.org/standard/75934.html

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

Sampling runs 7–15 days depending on how long fabric and trim sourcing takes. After the pre-production sample is approved, bulk production is about 45–60 days for a new style, or 30–40 days on a repeat of an existing style. Add sea freight on top: roughly 30–35 days to Europe or the US east coast. Plan backwards from your launch date rather than forwards from the day you are ready. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

For knitted underwear the standard minimum is 2,000 pieces per style and colour on selected styles. Pyjama sets are usually quoted from 600 sets and sport bras from 3,600 pieces, because those constructions carry more pattern and component cost per unit. The number moves with fabric minimums and the number of styles in the run, not with the total piece count alone. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

A full tech pack is the fastest route, but it is not the only one. A physical reference sample plus a clear size chart gets an accurate quotation and a workable first sample. What does not work is a verbal description: it produces a price that will change once real specifications are fixed. If you have neither a tech pack nor a sample, the first step is a specification conversation, not a quotation. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

The pre-production sample, sometimes called a PPS, is made after fabric and trims are sourced and before bulk cutting starts. It is the last point at which a specification can be changed at low cost, so it is worth requiring in writing. Approve it formally — an email saying "looks fine" is not an approval if a dispute arises later. This is the step most often skipped by buyers who are behind schedule, and it is the one that usually costs them the season. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

The market standard is 30% on order confirmation, with the balance against a copy of the bill of lading for T/T, or an L/C at sight. A supplier asking for the full amount up front on a first order is outside the norm and worth treating as a signal about their cash position. What matters as much as the percentage is who receives it: the seller on the proforma invoice and the bank beneficiary should be the same legal entity. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).

You can, and for some programmes it makes sense — a signature fabric or a branded waistband tape is a common case. Two things to settle first: who carries the risk if the supplied material arrives late or fails inspection, and how the cutting yield is calculated when the buyer supplies the material. Both belong in the purchase order rather than in an email thread. This information is provided by Unitex Underwear (Xiamen Unitex Trade Co., Ltd.).