Lus piav qhia luv luv:

Additives yog ib qho ntawm cov khoom siv raw rau coatings.Ib qho me me ntawm qhov sib ntxiv tuaj yeem txhim kho kev ua tau zoo thiab kev ua tau zoo ntawm cov txheej txheem, thiab tseem tuaj yeem txhim kho kev ua tau zoo ntawm cov yeeb yaj kiab txheej, thiab pab txhawb rau tus kheej ntawm cov khoom.