Nyob rau hauv ib qho instant, lub caij ntuj no tau maj mus ploj mus, lub ntsej muag rau peb yog caij nplooj ntoos hlav. Lub caij nplooj ntoos hlav yog sov, txhua yam yog tag nrho ntawm kev loj hlob, tab sis lub caij nplooj ntoos hlav tseem yog heev qhuav. Yog li ntawd, fireproof daim ntaub tau ua cov kev xav tau ntawm ntau cov lag luam.
Nyob rau sab qaum teb ntawm Tuam Tshoj, lub caij nplooj ntoos hlav yog sov, tab sis kuj nrog lus cua, muaj kev nyab xeeb thiab muaj hluav taws kub heev. Tsis muaj teeb meem kev lag luam los yog petrochemical kev lag luam, hluav taws tuaj yeem tshwm sim. Yuav kom tsis txhob muaj peev xwm loj los ntawm hluav taws, nws yog ib qho tseem ceeb uas yuav tsum tau siv cov ntaub ntim roj hmab. Hluav taws kub-retardant thiab nplaim retardant ntaub yog tsim los ntawm cov khoom tshwj xeeb. Nws muaj hluav taws-retardant thiab hluav taws kub retardancy thiab yuav tsis hlawv rau hauv hluav taws. Nws tuaj yeem tiv thaiv hluav taws txhob kis tau zoo thiab siv sij hawm ntau ntxiv rau hluav taws thiab cawm.
Qee cov phoojywg nug cov ntaub ntsa dej kub, xav tias nws yuav tsis hlawv, tab sis ntsej muag kub kub coj los ntawm qhov hluav taws kub, ntau yam yuav deformed, yog tias daim ntaub thaiv hluav taws kub kuj deformed, nws ua tsis tau cov nyom ntawm hluav taws thiab hluav taws kub nyhiab. Rau qhov no, cov khw yuav nug cov phooj ywg kom paub tseeb tias cov hluav taws kub thiab cov nplaim hluav taws kub muaj qhov kub zoo nyob hauv siab, txawm nyob hauv qhov chaw kub kub yuav tsis deform, tuav daim tseem ntawv, tiv thaiv kom tsis txhob deformation thiab combustion, yog ib qho zoo rau lub caij nplooj ntoos hlav ziab kom tiv thaiv hluav taws.