Hmoov plhaub yog cov hmoov ua los ntawm kev sib tsoo thiab sib tsoo cov plhaub. Nws cov khoom xyaw 95% yog calcium carbonate, chitin, thiab me ntsis ntawm cov amino acids thiab polysaccharides. Nws tuaj yeem siv ua cov khoom siv zoo rau cov khoom noj, tshuaj pleev ib ce thiab kho kom zoo nkauj sab hauv, thiab siv rau hauv cov tsiaj txhu thiab nqaij qaib. Cov khoom noj khoom haus calcium ntxiv rau cov khoom noj thiab cov khoom noj, kev ua cov hniav nyiaj hniav kub, cov tshuaj desiccants, thiab lwm yam. Cov xim hmoov plhaub yog cov xim txhim kho tsev tshiab hauv xyoo tas los no.

1. Kev nqus ntawm formaldehyde 2. Ua kom huab cua huv 3. Tshem tawm cov ntxhiab tsw phem 4. Cov teebmeem tua kab mob thiab cov kab mob tua kab mob