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Seamless Underwear Factory in China

Seamless Underwear Factory in China — Bonded & Circular Knit

Tianjie Lingerie produces seamless underwear in Dongguan, Guangdong, China, using bonding and circular-knit technology for bras, briefs, bodysuits and light shaping pieces with minimal stitching. Seamless styles are developed for brands that need a clean edge under close-fitting clothing. MOQ is typically 1,000–3,000 pieces per style per colour, samples take about 7 days, and bulk production runs 60–90 days.

Send your seamless brief
350+workers
20,000 m²plant area
10production lines
2Mpieces per year
7 daysdevelopment sample
60–90 daysbulk lead time

What the seamless line produces

  • Seamless bras — bonded cup edges, laser-cut armholes and heat-sealed strap joins
  • Seamless briefs — circular-knit bodies with bonded waist and leg openings, no side seams
  • Bonded bodysuits — one-piece seamless bodies with laser-cut necklines and bonded gussets
  • Light shaping pieces — targeted zones knitted into the panel rather than added as a second layer
  • Seamless sets — matched bra and brief programmes knitted on the same machine gauge
  • Laser-cut and bonded trims — raw-edge finishing for a flat profile under tight garments

Bonding fails slowly, then all at once

A bonded seam that passes a pull test on day one can delaminate after ten washes if the adhesive, temperature or dwell time drifts. Bonding parameters are set per fabric and logged per lot, and finished pieces go through wash-cycle and peel-strength checks before shipment. Circular-knit bodies are checked for course distortion after laundering, which is where cheap seamless programmes show up as a twisted leg opening. Sizes run XS to 4XL, with cup construction available on seamless bras.

How an order runs

  1. 1
    Brief — send sketches, a tech pack, reference samples or product images. We quote and confirm MOQ per style.
  2. 2
    Sampling — fitting sample, size-set samples, photo samples and PP samples in about 7 days. Salesman samples take 2–3 weeks.
  3. 3
    Revision — samples are revised on your feedback until approved. Sampling and bulk production run on the same technical system, so the approved fit carries into production.
  4. 4
    Bulk production — 60–90 days after materials and approvals are confirmed. Fabric and trim lead times are quoted up front.
  5. 5
    Inspection — international AQL standard in-house, with third-party inspection supported on request.
  6. 6
    Export — export documentation and shipping arranged; custom packaging and private-label trims handled before dispatch.

Compliance and certifications

ISO 9001, ISO 14001, ISO 45001, OEKO-TEX Standard 100, GRS (Global Recycled Standard) and BSCI. Certificates are supplied on request, and fabric test reports are available for the materials used in your order. Annual BSCI renewal is maintained.

Start a seamless development

Send a style reference, target fabric weight and the wash standard you need to pass. You will get a MOQ, a price band and a sampling schedule back.

Contact the factory
Classification
  • Beachwear
  • Pyjama
  • Lingerie
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