San Francisco, CA -- (SBWIRE) -- 10/12/2020 -- Waste oils and fats are the type of any kind of synthetic or petroleum-based oils and fats that have never been put to use due to its compromised quality, often due to contamination. Waste oils and fats are considered unsuitable for their desired end-use or original purpose due to their lower quality or loss of their original characteristics or presence of impurities.