1.Tsis txhob sib tov cov khoom no nrog lwm cov kua nplaum, txwv tsis pub cov kua nplaum yuav deteriorate thiab siv tsis tau
2.Tom qab noj cov kua nplaum, muab khi rau hauv lub sijhawm kom tsis txhob muaj cua qhuav thiab tawv nqaij.Cov kua nplaum yuav tsum huv si kom tsis txhob nqa impurities rau hauv qhov zoo
3.OPP, BOPP cov khoom yog cov khoom siv tsis muaj zog, tsis yooj yim rau kev sib txuas, yog li kev sib txuas yuav tsum tau siv raws li txoj kev, txwv tsis pub yooj yim ua rau tawg tshwm sim.
4.Txawm tias qhov kev sib txuas ua haujlwm zoo tag nrho, thov saib cov nplaum tom qab 8 teev
5. Cov xim thiab viscosity ntawm cov khoom no yuav hloov nrog kev hloov ntawm lub sijhawm cia thiab kub.Nws yog lub hauv paus ntawm cov kua nplaum, tab sis nws tsis cuam tshuam rau kev sib txuas ntawm cov kua nplaum
6.Tom qab siv, nws yuav tsum tau muab kaw thiab khaws cia hauv qhov ntxoov ntxoo qhuav