Vim qhov tsis txaus ntawm rosin resin raw khoom, tus nqi ntawm rosin resin yuav nce nyob rau yav tom ntej. Yog tias tus neeg siv khoom muaj kev npaj yuav khoom tsis ntev los no, thov hu rau peb lub tuam txhab kom tau txais tus nqi zoo tshaj plaws
