PTA futures and rubber futures. The production of aramid fiber mainly depends on PTA and rubber. Therefore, the price fluctuation of raw materials will affect the production cost and market supply of aramid fiber. In order to avoid the risk caused by this price fluctuation, enterprises and investors will choose to hedge by buying futures contracts. You can buy PTA futures or rubber futures contracts before producing or purchasing raw materials to lock in the price, thus reducing the risk brought by price fluctuations, so aramid fiber is related to PTA futures and rubber futures.