Bitumen 50-70
Bitumen is 50-70 bitumen which is done by aeration process on vacuum baton (raw material of bitumen production which is taken from the bottom of distillation tower in the vacuum of oil refineries).
Bitumen is 50-70 bitumen which is done by aeration process on vacuum baton (raw material of bitumen production which is taken from the bottom of distillation tower in the vacuum of oil refineries).