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https://www.rongduthread.com/products/

If you are looking for threads to sew lots of layers or some fairly thick or stiff fabrics, Rongdu has the very thread that is heavy duty thread. There are a wide array of applications including footwear, leather goods, luggage and bag, furniture upholstery, mattress, sports equipment, denim, automobile, canvas, tent, wire and cable applications, filtration and more.

Types of Heavy Duty Thread

Heavy Duty Filament Sewing Thread
Our strong sewing thread is available in polyester and Nylon for sewing a few of layers or some fairly thick or stiff fabrics. The thread has tight twists and no lint, which helps keep your machine cleaner and doesn't add bulk at the seams.

Heavy Duty Bonded Thread
Bonded thread is typically a two, three, or four-ply construction coated with resin that makes filaments twisting more tough with a uniform finish. Besides adding abrasion resistance and smooth stitching, the resin coating improves environmental resistance like heat tolerance, chemical and mildew resistance.

Heavy Duty Embroidery Thread
We provide super strong sewing thread along with various sizes and colors. Polyester threads are popular for embroidery because of more strength, UV resistance and color fastness.

Rongdu is a professional heavy duty threads manufacturer, we provide heavy duty thread, sewing thick thread, thick waxed thread, thick sewing thread, thick quilting thread, strongest type of sewing thread, thickest thread for sewing, etc. For more information, please feel free to contact us!