... 3,4....250D/2,3,4,5. Nylon 66 Bonded Sewing Thread lComponent: Polyamide 66 synthetic fibre, popular name Nylon 66 ... thread adopt nylon 66 filament, through special process to bond inside while twisting the yarn, then sticking and finalize the design. While sewing ... the thread does not disentwine, not ...