Asphalt is commonly divided into two types: natural asphalt and petroleum asphalt. However, because the sources and production of natural asphalt are extremely limited, and its usage is very minimal, the term "asphalt" typically refers to petroleum asphalt.

Superphalt is the name of the polymer-modified asphalt (PMA) independently developed by SK Energy. It incorporates SBS, a polymer modifier, into the asphalt, forming a network of polymer chains between the asphalt molecules. These chains absorb the loads applied to the pavement. Moreover, it significantly increases the resiliency of the pavement's viscosity and elasticity. With these features, SK Energy's Superphalt extends the lifespan compared to conventional asphalt pavement.