"Translation of this sentence: For the portion with particle size greater than 40mm, exceeding 2.1%, the unit price decreases by 0.3 yuan per wet metric ton, calculated proportionally. For the portion with particle size smaller than 6.1mm, exceeding 7.5%, the unit price decreases by 0.3 yuan per wet metric ton, calculated proportionally. I'm online waiting for further assistance! :') :')"