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Long Run (联润) logoFashion yarn
since 2011
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Yarn series

Four ECO yarn systems for fabric that feels new.

ECOSOFT®, ECOSTRONG, ECOFREE and ECOFUSHION — functional and environmentally friendly yarns built on Siro compact and Sirofil-compact spinning.

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Knit tops made with soft ECOSOFT yarn
ECOSOFT

ECOSOFT®

Softer, smoother, lighter and more elastic

Natural animal and plant fibres — wool, cashmere, mulberry silk, seaweed and flax — together with TENCEL™ and zero-carbon Modal are built into the yarn for a tangible, touchable quality. Fabrics knitted from ECOSOFT® yarns, partly using compact-soft spinning, feel soft, lighter and more elastic; the shrinkage difference between long and short fibres makes the fabric fuller and bouncier.

Key fibres

  • Wool
  • Cashmere
  • Mulberry silk
  • Seaweed fibre
  • Flax
  • TENCEL™
  • Modal

Recommended products

  • Modal series
  • Cashmere-wool blended yarn
  • Spun silk yarn
  • Acrylic blended yarn
Sweatshirts in a range of colours made with ECOSTRONG yarn
ECOSTRONG

ECOSTRONG

Tighter and more abrasion-resistant

Compact-soft spinning markedly raises yarn strength and gives fabric more body. The composite yarn structure brings more stable dimensions, better wrinkle resistance and strong wear resistance, with fibres held tightly for a smooth, crisp hand — opening new paths for warp-knitted apparel fabrics, shoe materials and woven safety protection.

Key fibres

  • Polyester
  • TENCEL™
  • Wool
  • Functional polyester

Recommended products

  • Polyester-Tencel blended yarn
  • Functional polyester blended yarn
  • Tencel-wool blended yarn
  • Siro compact spun yarn
Woman in a light sun-protection jacket made with ECOFREE yarn
ECOFREE

ECOFREE

Sun protection and a cooler feel

Functional fibres for sun protection, cool touch and moisture-wicking quick dry are blended with TENCEL™ Lyocell and more, giving the yarn a cool hand, UV resistance and better moisture management — sweat-absorbing, quick-drying, non-sticky and comfortable to wear.

Key fibres

  • TENCEL™ Lyocell
  • Modal
  • Naia™
  • Recycled polyester
  • Sun-protection & cool-feel fibres

Recommended products

  • Modal series
  • Naia™ blended yarn
  • Recycled polyester series
  • Siro compact spun yarn
Sustainability standards behind the ECOFUSHION yarn series
ECOFUSHION

ECOFUSHION

More transparent, lower carbon

CIRCULOSE®, stock-dyed, organic and recycled fibres — responsible, sustainable, low-footprint materials — combined with proprietary low-carbon processes to develop more transparent, low-carbon and even negative-carbon yarns. Together with industry partners, from linear innovation towards closed-loop recycling.

Key fibres

  • CIRCULOSE®
  • Ecovero™
  • Organic fibres
  • Recycled polyester
  • Recycled nylon
  • Dope-dyed fibres

Recommended products

  • Dope-dyed series
  • Recycled polyester series
  • Zero-carbon yarn
  • Recycled nylon
  • Ecovero™
Compare

Which series for your fabric?

A quick comparison of the four series by promise and representative fibres.

SeriesPromiseRepresentative fibresRecommended products
ECOSOFT®Softer, smoother, lighter and more elasticWool, Cashmere, Mulberry silk, Seaweed fibreModal series, Cashmere-wool blended yarn, Spun silk yarn
ECOSTRONGTighter and more abrasion-resistantPolyester, TENCEL™, Wool, Functional polyesterPolyester-Tencel blended yarn, Functional polyester blended yarn, Tencel-wool blended yarn
ECOFREESun protection and a cooler feelTENCEL™ Lyocell, Modal, Naia™, Recycled polyesterModal series, Naia™ blended yarn, Recycled polyester series
ECOFUSHIONMore transparent, lower carbonCIRCULOSE®, Ecovero™, Organic fibres, Recycled polyesterDope-dyed series, Recycled polyester series, Zero-carbon yarn
Applications

Beyond apparel.

Long Run's yarns also go into two dedicated application lines.

Outdoor parasol and furniture representing the safety protection line

Safety protection

Woven safety-protection fabrics gain new paths with compact-soft ECOSTRONG yarns.

Knitted sneakers representing the shoe material line

Shoe material

Tighter, more abrasion-resistant yarns for knitted and woven shoe uppers.

FAQ

About the yarns

Straight answers drawn from Long Run's own published information.

What does Long Run Textile produce?

Long Run Textile (Shandong Lianrun New Material Technology Co., Ltd.) is a differentiated and sustainable fashion yarn specialist. It runs two segments — white (raw-white) yarn and melange (colour-spun) yarn — organised into four ECO series: ECOSOFT®, ECOSTRONG, ECOFREE and ECOFUSHION. The yarns are used in knitted underwear, outdoor leisure wear, shoe materials and outdoor protection.

What is Sirofil-compact spinning and why does it matter?

Sirofil-compact (compact-soft) spinning combines Siro compact spinning with staple-filament covered yarn: a filament is fed at the front roller jaw alongside two rovings, and an added fibre-strand aggregation zone condenses the fibres before twisting. Compared with ordinary staple-filament composite yarns, the result is smoother and more compact. Long Run lists benefits such as shape retention, abrasion resistance, anti-snagging, anti-pilling, low shedding, lustre and mechanical stretch. About 30,000 spindles run this technology.

Which fibres can be blended into Long Run yarns?

Published options include wool, cashmere, mulberry silk, seaweed fibre, flax, TENCEL™ Lyocell, Modal, Naia™, CIRCULOSE®, Ecovero™, organic fibres, recycled polyester, recycled nylon and dope-dyed fibres, plus functional sun-protection, cool-feel and moisture-wicking fibres.

Inquiry

Tell us the fabric you are developing. We will suggest the yarn.

Export desk: Ella Jia · ella_jia@longruntex.cn · +86-178 6293 0263

Send an inquiry →

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