BITUMEN PENETRATION GRADE 50 70 It is a kind of bitumen which is produced during the process of oxidation of vacuum bottom in disti...
BITUMEN GRADES: 40 50 60 70 AND 80 100 All 15 packages are tar : Cube bag 300Kg (180 150 200) KG sheet may Thicknesse 0.6 Viet barrel...