According to the company, black aramid fibres have already been produced in the world, but they do not have the same characteristics (modulus) as the standard Twaron aramid fibre. For the threads to become completely black, they are not dyed afterwards, like cotton fibres. The production process has been adjusted to inject the fibre with the black dye during the process. This makes it the first black aramid fibre with characteristics that are equivalent to the standard golden yellow fibre. With its three production sites in the Netherlands, the company says it manufactures more than half of the world's production of aramid. The fibre is five times stronger than steel at the same weight and is often used in bullet-proof vests, ropes and cables, sails, and fire-fighter suits.