Fun diẹ ẹ sii ju ọdun mẹwa, a ti n pese awọn orisun ti o ga julọ fun awọn irin-irin irin ajeji nla.Fun apẹẹrẹ, awọn ohun elo irin nla ni South Africa, Ila-oorun Yuroopu, Aarin Yuroopu, Aarin Ila-oorun, Iran, Russia, ati bẹbẹ lọ, jẹ idanimọ ni iṣọkan nipasẹ awọn alabara.