Could someone explain to me the difference between a refining company’s “comprehensive product ratio” and its “comparable comprehensive product ratio”?

The comprehensive commodity rate refers to the comprehensive commodity rate for the corresponding year. For newly established enterprises, fill in the values as per the design specifications. Comprehensive commodity rate = Volume of crude oil products ÷ Volume of crude oil and feedstock processed × 100%. The comparable comprehensive commodity rate is a comprehensive commodity rate that involves certain adjustments to enable more reasonable comparison and evaluation within the same industry, usually based on standard products. A so-called standard product refers to the benchmark product specified by the industry. Based on the commodity rate of this product, conversion coefficients for the commodity rates of other products are established to enable the conversion of product output. This is particularly convenient for industries with similar manufacturing processes but diverse product ranges, such as light industry, textiles, and machinery. The comprehensive commodity rate of the standard product obtained in this way is the comparable comprehensive commodity rate.

Comprehensive commodity rate = Volume of crude oil products sold ÷ Volume of crude oil and feedstock processed × 100%. The comparable comprehensive commodity rate refers to the ratio of the difference between the comprehensive commodity rates of the same commodity at two different times to the comprehensive commodity rate from the earlier period.