Raws li peb txhua tus paub, daim ntawv tso saib cov khoom siv khib nyiab yog corrugated, ntau tus neeg yuav muaj kev txhawj xeeb.Qhov ntawv txee rau ntawv yog ib puag ncig zoo, cov ntawv ntim ntawv yuav tsis muaj zog nyob hauv no ntawm cov dej.Thaum peb paub, ntawv yuav tsis yog waterproof , tab sis yog tias daim ntawv tso saib khib tom qab kua nplaum, lossis muaj qee yam tsis muaj dej tsis ua haujlwm.Tab sis tom qab txhua qhov, nws zoo dua kom deb ntawm dej.
