“Heavyend” refers to the denser, more viscous fractions of crude oil that remain after the lighter components, such as gasoline and diesel, have been distilled off. These heavier fractions include substances like heavy fuel oils (HFO), bitumen, asphalt, and lubricating oils. Due to their high boiling points and thicker consistency, heavyend products are typically used in industrial applications, including power generation and road construction. They are valued for their high energy content and cost-effectiveness, although they often have higher levels of sulfur and other contaminants, which can lead to increased emissions and environmental impact. As a result, there is a growing emphasis on managing their use and adhering to environmental regulations to mitigate their ecological footprint.