Oil Products and Petrochemicals Uses In Industries: Bitumen and Sodium Bicarbonate
WHAT IS BITUMEN PENETRATION GRADE: For thousands of years before the first civilization in Sumer, the substance we call bitumen was already prized as an adhesive the result, apparently, of an ancient hunter’s discovery that he could attach his flint arrowhead to a shaft with a sticky black substance found in a nearby spring. The […]