hard twist ply silk yam

extra hard twist

hard silk

hard twist

hard twist nubby yarn

hard twist thread

Hard Twist Yarn

compound-twist silk thread

double-twist twist tube

twist silk

complete equipment for silk and silk piece goods & spun silk piece goods

Hard Roof and Hard Coal

Hard Roof and Hard Floor

hard-soft-hard sandwich media

twist on twist

twist-against-twist

twist-on-twist

blanket with silk or rayon silk bindings

silk manuscripts，(ancient)book copied on silk