Pittsburgh has textiles wholesalers and manufacturers. Textiles can be of both natural and synthetic origins. The manufacturing process would vary accordingly (in case of natural textiles, the crop is harvested first, or the worms are collected, before further processing). There is a large variety available in color, finish, texture, and many other parameters. Wholesalers are usually attached to the manufacturers, and they act as the middlemen who sell to the retailers in bulk quantities. The prices are also lower for wholesale transactions. The plants have chemical treatments and dyes available for obtaining the various shades and colors that we see in textiles today.