A trading foundation
Shanghai Yusi was established, serving embroidery thread, sewing thread and garment accessories.
EST. 1999 · SHANGHAI
Threads engineered for better embroidery.
Machine embroidery threads, garment accessories and custom embroidered patches for global apparel supply chains.
27+years of industry experience
01ABOUT YUSI
From one dependable thread to a complete embroidery solution.
Founded in 1999, Yusi Thread focuses on machine embroidery thread, garment accessories and custom embroidery solutions.
With a trading base in Shanghai and a production base in Quzhou, Zhejiang, we connect product development, manufacturing, quality control and application support.
1999Founded
27+Years of experience
2,500 m²+Production base
600Stock colours
1999 — 2026
From trade services to our own manufacturing.
Own manufacturing
Quzhou Sike Thread was established, bringing production and core processes in-house.
Capacity & development
A 2,500 m² factory was acquired and Dragon Sakura development began.
Dragon Sakura launch
Dragon Sakura was developed successfully, supporting demanding international apparel supply-chain applications.
Two complementary brands
Sintech launched, complementing the premium range with exceptional value.
Global reach
Further overseas development for apparel and sports supply chains.
Products
Three ways to build your next collection.
NEW · 30D ULTRA-FINE
A finer thread for high-precision embroidery.
A 30D ultra-fine machine embroidery thread solution from YUSI THREAD for compact lettering, refined logos, dense stitch areas and lightweight fabrics. Confirm the final result with a sample on your intended fabric and equipment.
Discover the 30D solution →03TWO-BRAND PORTFOLIO
DRAGON SAKURA · 龙樱
Performance for demanding embroidery.
A premium range engineered for strength, low shrinkage, low elongation and consistent colour across repeat orders.
SINTECH · 星迪 · シンテック
Reliable industrial value.
A mature polyester thread range under Sintech that balances dependable production performance with competitive sourcing economics.
04MANUFACTURING & QUALITY
Consistency is built into every process.
From raw-material selection and twisting to dyeing, setting, winding and stitch testing, each stage is organised around stable high-speed performance and repeat-order consistency.
Explore our 12 processes →12 PROCESSES
From raw fibre to verified stitch performance.
A vertical view of the production path—from incoming fibre through colour control and winding to the final machine stitch test.
- 01
Raw-material selection
Work with major fibre suppliers on low-shrinkage raw materials, toughness and stable tensile strength.
- 02
Plying & twisting
Uniform plying and controlled twist to release internal stress and reduce looping.
- 03
Dyeing
Control colour consistency across thread deniers.
- 04
Colour verification
Instrument checks and daylight/fluorescent-light comparison against previous colour standards.
- 05
Fixation & anti-yellowing
Control colour migration and assess washing, light exposure and yellowing resistance.
- 06
Softening
Apply a dedicated finish to support smooth running while controlling oil staining.
- 07
Heat drawing & setting
Reduce shrinkage, release internal stress and stabilise the structure for a flat embroidery surface.
- 08
Manual inspection
Screen for hairiness, knots and contamination.
- 09
Precision winding
Monitor tension and winding firmness for smooth unwinding.
- 10
Physical testing
Sample-test breaking strength, twist and elongation/shrinkage by batch.
- 11
Colour-fastness testing
Check washing and light fastness before release.
- 12
Machine stitch testing
Run embroidery samples to verify performance in the intended process.
05CERTIFICATION & RESPONSIBLE INPUTS
OEKO-TEX® STANDARD 100
Certified sewing and embroidery thread made of 100% polyester. Product Class I (baby articles), Annex 6.
- Specification / model
- 19.HCN.79072
- Valid until
- 31 July 2027
GRS · Global Recycled Standard
Reference scope certificate for dyed and greige yarns and dyeing operations issued to Quzhou Yusi Thread Industry Co., Ltd.
Archived certificate · validity ended 22 March 2025. Ask us to confirm current certified scope before ordering.
View reference certificate →bluesign® APPROVED inputs
All dyes and auxiliaries specified for Yusi thread production are sourced from bluesign® APPROVED product ranges. Supporting supplier documentation is available on request. This statement does not claim that YUSI THREAD is a bluesign system partner.
WHY YUSI THREAD
Built for repeatable embroidery, from thread to finished application.
Stable high-speed machine performance
Consistent colour management for repeat orders
Thread, accessories and patch development
Application support and sample verification
START A CONVERSATION
Tell us what you need to embroider.
Send us your product type, thread specification, colour reference, expected volume and destination. We will respond with the most suitable options.