Royan Rastin C0 a exporter of Iranian Bitumen is considered to have the highest standards in the world with respect to quality and the service its producers and suppliers make available world-wide. We are proud to make possible the supply of Iranian bitumen ( Isfahan Refinery ) in multiple grades 60/70, 85/100, and 40/50.Standard of usa A.A.S.H.O.T 102-42Packing standard for drums. We have been awarded management control for SGS.Waiting your news .ThanksThanks & RegardsMohammad.SattariPresident WWW.RoyanRastin.Biz