Please, do not list yarn manufacturers here. Those should be submitted at;
From very simple beginnings, man-made fiber production has developed into a sophisticated, versatile and innovative industry. Today, not many roads are being build without the use of some kind of fiber substrate, there is no easy chair that isn't stuffed with fiber and no one is going to walk into space if the suit isn't made up with the help of engineered nonwoven fabrics.
The Fiber Producers category's main page lists companies which manufacture a variety of fibers from different kinds of polymer compounds, and cannot be placed further down in the directory without doing injustice to the company or confusing the viewer. In the sub-categories, you will find links to companies dedicated to the manufacture of a specific fiber, or for which the production of that fiber is its main business.