Residue Pitch Oil

It seems like you're referring to "residue pitch oil." However, the term is not entirely clear, and I need more context to provide you with accurate information.

"Residue pitch oil" could potentially be related to the petroleum industry or chemical processes. In the context of the petroleum refining industry, "residue" usually refers to the heavy components left over after crude oil has been processed in a refinery. "Pitch" is a term sometimes used to describe a thick, dark, sticky substance that can be derived from the distillation or processing of certain materials.