Businesses dealing in textile fibres supply or process the raw materials used to make yarns, fabrics and other textile products. These may include natural fibres such as wool, cotton, flax, hemp and silk, as well as man-made fibres such as polyester, nylon, acrylic, polypropylene and regenerated fibres. Materials are commonly supplied as staple fibres, continuous filaments, tow or recycled fibre, in forms suited to further manufacture. Typical services include sorting, grading, cleaning, opening, carding, blending and preparing fibres for spinning or non-woven production. Some businesses also dye or treat fibres, recover fibres from textile waste, or supply specialist materials for insulation, filtration, upholstery, clothing and technical textiles. Customers may include spinners, fabric manufacturers, garment makers, textile recyclers and producers of industrial or household goods.