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Tsev > Xov xwm > Ntsiab lus

Alum siv lub ntsiab

Ua zoo cross-linking dab tsi rau tej tsiaj, thiab tus viscosity ntawm tej. Urea-formaldehyde nplaum kuj yog siv raws li tus hardener rau 20% tshuaj kho sai.

Hauv lub sis plawv hniav thiab ntawv kev lag luam, ua Rosin, emulsions ciab thiab lwm tebchaw precipitating dab tsi, flocculant hauv dej tshuaj, kuj ua npuas dej tua hluav taws tso no, raw khoom tau siv thiab ua alum, txhuas dawb, roj decolorizing, deodorizing, cov tshuaj mas siv, lwm yam tshuaj thiab lwm yam ntaub ntawv raw. Kuj ua dag gemstones thiab siab ammonium alum. Arsenic tsis tshaj 5mg/kg khoom uas yuav siv rau dej tshuaj flocculant.


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