Update:
Petroleum resins are a by-products of petroleum cracking, through pretreatment, polymerization and distillation. Petroleum resins are not used independently, but have to be used together with other kinds of resins as promoters, adjusting agents and modifiers in hot melt adhesive, pressure-sensitive adhesive, hot melt road marking paint,rubber tires and so on. It is a solid & pale yellow in color. Transport in Covered Hoppers