Thaum xam tus nqi ntawm cov xim masterbatch, qhov hnyav ntawm masterbatch nws tus kheej yuav tsum raug txiav tawm.
Piv txwv li: Ntxiv 2 kg ntawm cov xim masterbatch rau 100 kg ntawm cov yas resin coj tag nrho qhov hnyav rau 102 kg. Piv txwv tias tus nqi resin yog 10 yuan / kg thiab tus nqi masterbatch yog 20 yuan / kg,
ces tus nqi nce ntxiv rau 102 kg ntawm cov khoom yas vim siv cov xim masterbatch yog:
2 kg × (20 yuan/kg - 10 yuan/kg)=20 yuan. Hloov mus rau tus nqi nce ntxiv rau 100 kg ntawm cov khoom yas vim siv cov xim masterbatch, qhov no yog:
20 yuan / 102 kg × 100 kg=19.61 yuan.