5 Easy Facts About spandex yarn hs code Described
Chemical route to polyurethane polymer Utilized in production of spandex. Spandex is especially made up of a polyurea derived from your response of the diol and also a diisocyanate. Two lessons of spandex are outlined because of the "macrodiols". 1 course of macrodiols may be the oligomer produced from tetrahydrofuran (i.The primary spandex fibers