Oxidized Bitumen or Blown bitumen grades are produced by passing air through the penetration grades. The most popular grades are; grades 95/25
Peak Universal Business [2019-07-31 15:42:39 ]
Penetration Bitumen is refined residue from the distillation process of selected crude oils manufactured at refinery.
Zista Group [2015-12-05 22:25:23 ]