1. Raws li muaj pes tsawg leeg: feem ntau nruab nrab alkali, tsis pub alkali, siab alkali (los cais cov khoom sib xyaw ntawm alkali hlau oxide hauv iav fiber), tau kawg, tseem muaj kev faib tawm los ntawm lwm cov khoom xyaw, tab sis muaj ntau ntau yam, thiab lawv tsis yog ib tug los ntawm ib tug. Txheeb.
2. Raws li cov txheej txheem tsim tawm: crucible hlau kos duab thiab pas nrig kiln hlau daim duab.
3. Raws li ntau yam: muaj plied xov paj, xov ncaj qha, dav hlau xov paj thiab lwm yam.
Tsis tas li ntawd, nws tau qhov txawv los ntawm ib tus xov tooj fiber ntau, TEX tus lej, ntswj, thiab sizing tus sawv cev hom.
Kev faib tawm ntawm cov iav fiber ntau yog zoo li cov qeb ntawm cov xov paj fiber ntau. Ntxiv rau qhov saum toj no, nws kuj suav nrog: weave, qhov hnyav, dav, thiab lwm yam.