High-quality: WTI is considered a "light-weight sweet" crude oil, that's simpler to refine, even though Brent is really a combination of crude oils, such as both of those "mild sweet" and "major bitter" grades. Screening is by references that POs inquire one another for, not by released assessments or from https://bookmarkbooth.com/story19723663/indicators-on-massage-you-should-know