Hom annindo - Cov ntaub ntawv pom qhov rooj thaiv

Yoov tshaj cum - Cov ntaub ntawv pov thawj cov ntaub thaiv yog ib qho kev tsim muaj, tsis yog tshwj xeeb thev naus laus zis siab dua. Lawv siv lub cev nqaij daim tawv ntawm Pore loj xaiv. Lawv feem ntau yog woves los ntawm polyester lossis siftester lossis silk, tsim ntau cov ntxaij me me uas zoo repel yoov, ua kom lawv sab nraud. Yoov tshaj cum tau dhau los ua kev cuam tshuam ntxiv. Yav dhau los yog kaw rau lub caij ntuj sov, Tam sim no lawv tuaj yeem pom tam sim no nyob rau lub caij nplooj zeeg thiab lub caij ntuj no, ua rau muaj kev ntxhov siab tseem ceeb. Coob tus neeg siv tshuaj tua kab thiab yoov tshaj cum, tab sis yoov tshaj cum, tab sis yoov tshaj cum tau nce zuj zus rau cov khoom no. Txawm hais tias ntau tus neeg tau xaiv los nruab yoov tshaj cum {{} Exhoids cov rooj ntaub thaiv hauv lawv cov yoov tshaj cum tawm. Muaj ntau ntau hom yoov tshaj cum - Cov ntaub ntawv qhov rooj kab thaiv. Tam sim no, cov ntaub ntawv feem ntau ntawm kev ua lag luam suav nrog PVC thiab sib nqus ntxaij vab tshaus. PVC, feem ntau hu ua polyvinyl chloride, yog ubiquitous nyob rau hauv peb lub neej nyob txhua hnub. PVC yog tus cwj pwm los ntawm nws cov ruaj khov, muaj kuab xim, thiab cov khoom tsiv teb tsaws chaw tom qab ua tiav, tso cai rau nws los tswj nws lub sijhawm, ib qho zoo ntawm cov khoom lag luam zoo. Lwm hom kev sib nqus yoov tshaj plaws - Muaj ntawv pov thawj qhov rooj qhov rooj kab hlau qhov rooj kab hlau rhuav uas tau dhau los ua cov nrov tsis ntev los no. Qhov kev yoov tshaj cum no - muaj ntawv pov thawj qhov rooj qhov rooj thiab muaj kev nyab xeeb dua li PVC yoov qhia ntawv cov ntaub thaiv qhov rooj qhov rooj duab.