... shrinkage with High- filamentsUsing: 1)50D/36F for Core-spun yarn with high tenacity low shrinkage, for example ... fiber+50%50D 2)High-grade sewing thread. High-grade fabrics of clothes.3) Leather suture ... thread, quilting twine, sailcloth, fish net yarn, yarn ... tenacity high filaments Low shrinkage For polyester sewing thread 50D/34F/36F/68F8.0±1.0<100. ...