Taw qhia
Cov fwj dej ua si yog ib qho khoom siv nrov rau cov neeg ncaws pob, cov neeg taug kev, thiab txhua tus neeg uas nyiam ua lub neej nquag. Lawv tau tsim los tuav dej thiab lwm yam kua dej thaum ua haujlwm ntawm lub cev tsis zoo. Tab sis dab tsi yog cov fwj ua los ntawm, thiab lawv cov ntaub ntawv cuam tshuam li cas rau lawv cov kev ua tau zoo thiab kav ntev? Hauv tsab xov xwm no, peb yuav ua tib zoo saib cov ntaub ntawv siv hauv cov fwj dej ua si, lawv cov khoom, thiab qhov zoo thiab qhov tsis zoo ntawm txhua tus.
Yas
Cov khoom siv feem ntau siv hauv cov fwj dej ua si yog yas, thiab yog vim li cas. Yas yog lub teeb yuag, ruaj, thiab yooj yim rau pwm rau hauv ntau yam duab thiab ntau thiab tsawg. Nws kuj tseem pheej yig thiab yooj yim los hloov, ua rau nws yog qhov kev xaiv nrov rau cov khoom uas feem ntau raug hnav thiab tsim kua muag.
Muaj ob peb hom yas uas feem ntau siv hauv cov fwj dej ua si. Feem ntau yog polyethylene, uas yog ib qho yooj yim thiab lub teeb yuag yas uas tuaj yeem tiv taus ntau lub siab yam tsis muaj kev tawg. Nws kuj tseem tiv taus qhov cuam tshuam, ua rau nws xaiv zoo rau cov fwj uas tau poob los yog tsoo.
Lwm hom yas uas siv rau hauv cov fwj dej ua si yog polycarbonate. Cov khoom no muaj zog thiab nruj dua li polyethylene, ua rau nws xaiv zoo rau cov fwj uas yuav tsum tau ua kom ntev dua. Txawm li cas los xij, nws tseem kim dua thiab tuaj yeem ua rau tawg yog tias poob los yog raug kub siab.
Hlau
Cov fwj dej hlau tau dhau los ua neeg nyiam ntawm cov neeg ncaws pob thiab cov neeg nyiam sab nraum zoov. Lawv feem ntau yog ua los ntawm cov hlau tsis muaj steel, uas yog cov khoom siv muaj zog thiab ruaj khov uas tiv taus corrosion thiab xeb. Cov fwj hlau kuj tseem muaj kev tiv thaiv zoo heev, uas txhais tau hais tias lawv tuaj yeem khaws cov kua dej txias lossis kub rau lub sijhawm ntev dua li lub raj mis yas.
Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm cov fwj dej hlau yog lawv cov kav ntev. Lawv tsis tshua muaj kev tawg lossis tawg dua li cov fwj yas, thiab lawv tuaj yeem tiv taus ntau qhov hnav thiab tsim kua muag yam tsis muaj kev qhia txog kev puas tsuaj. Lawv kuj yog ib qho kev xaiv zoo rau cov neeg uas txhawj xeeb txog kev cuam tshuam ib puag ncig ntawm cov yas, vim lawv tuaj yeem rov qab siv tsis tau tas li.
Txawm li cas los xij, cov fwj hlau feem ntau hnyav dua li cov fwj yas, uas tuaj yeem ua rau tsis zoo rau cov neeg uas tab tom nrhiav lub teeb mus ncig. Lawv kuj tseem kim dua li lub raj mis yas, uas tuaj yeem ua rau lawv tsis tshua muaj kev nkag tau rau qee cov neeg siv khoom.
iav
Cov iav dej fwj tsis yog ntau npaum li lub hwj yas lossis hlau, tab sis lawv muaj qee qhov zoo ntawm cov ntaub ntawv no. Cov iav tsis muaj tshuaj lom, rov ua dua tshiab, thiab tiv taus cov stains thiab tsw, uas txhais tau hais tias nws yog ib qho kev xaiv zoo rau cov neeg uas txhawj xeeb txog kev pheej hmoo ntawm kev noj qab haus huv cuam tshuam nrog lub hwj yas. Nws tseem yog lub tshuab ntxuav tais diav muaj kev nyab xeeb, ua kom yooj yim los ntxuav thiab rov siv dua.
Ib qho ntawm cov downsides ntawm iav dej fwj yog lawv fragility. Lawv feem ntau yuav tawg lossis tawg dua li cov fwj yas lossis hlau, uas tuaj yeem ua rau muaj kev txhawj xeeb rau cov neeg uas siv lawv thaum lub sijhawm ua haujlwm lub cev lossis mus ncig. Lawv kuj hnyav dua li lub raj mis yas, uas tuaj yeem yog qhov tsis zoo rau cov neeg uas tab tom nrhiav kom nyob twj ywm.
Xaus
Hauv kev xaus, cov fwj dej ua si yog qhov khoom siv tseem ceeb rau txhua tus neeg uas tab tom nrhiav kom nyob twj ywm hydrated thaum koom nrog kev ua si lub cev. Lawv muaj nyob rau hauv ntau yam ntaub ntawv, xws li yas, hlau, thiab iav, txhua tus muaj lawv tus kheej zoo thiab qhov tsis zoo. Yas yog lub teeb yuag, yooj yim rau pwm, thiab pheej yig, ua rau nws yog qhov kev xaiv nrov rau ntau tus neeg siv khoom. Hlau yog ruaj, insulating, thiab ib puag ncig tus phooj ywg, tab sis tuaj yeem hnyav dua thiab kim dua li yas. Cov iav tsis muaj tshuaj lom, rov ua dua tshiab, thiab tiv taus cov stains thiab tsw, tab sis tuaj yeem ua tsis taus thiab hnyav. Thaum kawg, kev xaiv ntawm cov khoom siv yuav nyob ntawm tus kheej nyiam thiab cov kev xav tau tshwj xeeb, tab sis muaj lub raj mis dej ua si rau txhua tus.
