Thaum uas feem ntau paub cov tais diav thiab iav, lawv muaj ntau tshaj cov tais diav, tais diav, thiab qhov rai qhov rai iav. Cov khoom siv thiab iav kom muaj kev tshaj li qub-qee zaum xws li khoom hauv cov khoom, qee zaus raws li cov khoom tsim nyog rau kev tsim lwm cov khoom.
Cov khoom muaj xws li catalytic converter substrates rau koj lub tsheb, fiber optic iav uas coj cov inter-net mus rau, lub qhov muag teeb, thiab cov hniav yas .Txhais cov khoom siv, cov khoom siv hluav taws xob tawg steel ironing furnaces thiab cement kilns, kos cov hluav taws xob hauv koj lub xov tooj ntawm tes, thiab qhov project dav hlau cav thaum lub davhlau.
Kev hais lus, cov khoom siv hlau yog cov khoom siv hlau, cov khoom tsis muaj hlau, uas yog, tsis yog hlau, tsis yog plast-tsoos, tsis yog organic chemical.Cov khoom xws li cov oxides, nitrides, carbides, thiab cov ntxhuav feem ntau yog cov khoom siv roj hmab. muaj ntau yam sib txawv kiag li.Txawm li cas los xij, feem ntau cov muag muag iav yog silicate los yog borosilicate bases compositions.
