We manufacture and export greige (undyed) polyester sewing thread from our 20,000㎡ factory in Keqiao, Zhejiang. 36 twisting machines, 8000+ tons annual capacity. ISO & Oeko-Tex certified.
Located in Keqiao, Shaoxing, Zhejiang — the heart of China's textile industry. Our factory is equipped with advanced Japanese and German twisting and winding machinery.
Shaoxing Zhengyuan Thread Co., Ltd. has been manufacturing greige polyester sewing thread for over a decade. We supply 100% virgin polyester greige thread — no recycled materials, no fillers. Our thread is widely used by sewing thread dyers and finishers across Southeast Asia, the Middle East, Africa, and South America.
Every batch undergoes in-house quality testing: tensile strength, twist per meter, elongation, and evenness (Uster). We maintain Oeko-Tex and ISO 9001 standards across all production lines. Our products are SGS tested upon request.
We maintain rigorous quality standards. Our certifications are verifiable and regularly audited.
Certificate scans available upon request. Contact us to request copies.
We supply greige (undyed) thread only. All products are 100% virgin polyester, suitable for dyeing and finishing by your factory. No color matching needed.
Our most popular specification. Balanced twist, excellent dye uptake. Ideal for general sewing thread production.
| Material | 100% Virgin Polyester |
| Appearance | Greige (Undyed) |
| Tensile | ≥ 1,200 cN (single) |
| Twist | 580 ± 20 TPM |
| Elongation | 18-22% |
| Evenness (Uster) | ≤ 14% CVm |
| MOQ | 500 kg |
Three-ply construction for extra tensile strength. Popular for denim, workwear, and industrial thread processing.
| Material | 100% Virgin Polyester |
| Appearance | Greige (Undyed) |
| Tensile | ≥ 1,800 cN (single) |
| Twist | 520 ± 20 TPM |
| Elongation | 20-25% |
| Evenness (Uster) | ≤ 15% CVm |
| MOQ | 500 kg |
Extra heavy-duty specification for industrial applications. Upholstery, automotive, and heavy fabric thread processing.
| Material | 100% Virgin Polyester |
| Appearance | Greige (Undyed) |
| Tensile | ≥ 2,200 cN (single) |
| Twist | 450 ± 20 TPM |
| Elongation | 22-28% |
| Evenness (Uster) | ≤ 16% CVm |
| MOQ | 300 kg |
Need a different specification? Custom twist, strand, or package size available. Tell us your requirement →
We offer multiple packaging formats to suit your production and dyeing process.
Standard package. 1.0-1.5 kg per cone. 30 cones per carton.
For direct dyeing. Perforated plastic tube. 1.0-1.5 kg per tube.
For specialty dyeing. Loose skein form. Custom weight per hank.
20,000㎡ factory with 36 twisting machines and 24 auto winding lines. We fulfill large-volume orders on schedule.
No middleman, no trading company markup. Our prices are 15-25% lower than traders for the same quality.
Oeko-Tex Standard 100, ISO 9001:2015, and SGS tested. In-house Uster lab tests every batch.
200+ tons of greige thread in stock for immediate shipment. 7-15 day lead time for standard specs.
FOB Shanghai, FOB Ningbo. CIF delivery available to Vietnam, Bangladesh, Pakistan, Turkey, Egypt, Nigeria, and more.
Custom twist, strand count, package size, or special labeling. We accommodate your production needs.
Take a visual tour of our manufacturing plant. We welcome factory visits — contact us to schedule.
Video tour available upon request. More photos on Factory page →
Tell us your specification, quantity, and destination. We'll send you our best FOB price.
WhatsApp (Fastest): +86 133 9657 3533
Email: sarah@rawwhitethread.com
Phone: +86 133 9657 3533
Address: Keqiao, Shaoxing, Zhejiang, China
Working Hours: Mon-Sat, 8:00-18:00 (GMT+8)
Reply Time: Within 2 hours during working hours