The document discusses the oil cleaning market and provides an overview of Transparency Market Research, the company that produced the report. It notes that oil cleaning systems are used to purify oil and remove contaminants from engine oil. An oil cleaning machine sends oil through a purifier that filters out particles over one micron in size and gravity returns the cleaned oil to the engine. The filters are replaced when contamination parameters are reached and can be recycled. The document provides contact information for Transparency Market Research and details on accessing additional reports and information from the company.