saib ntau cov ntaub ntawv technical, thov download pdf.
Peb sim ua kom zoo tshaj plaws, tuam txhab cov neeg siv khoom ", vam tias yuav yog qhov zoo tshaj plaws kev koom tes ua haujlwm thiab tus thawj tswj hwm kev lag luam rau cov neeg ua haujlwm, cov chaw muag khoom thiab cov neeg siv khoom, paub txog tus nqi sib koom thiab kev lag luam ruaj khov rau Hoobkas Dawb qauv tsim nyog Pvc Sib NqusDaim kab xev ceeb toom, Nrog rau ntau yam, zoo zoo, tus nqi ncaj ncees thiab cov kev pabcuam zoo, peb yuav yog koj tus khub lag luam me zoo tagnrho.Peb zoo siab tos txais cov tshiab thiab tsis ntev los no los ntawm txhua qhov kev ua neej nyob rau hauv kev sib cuag nrog peb rau yav tom ntej tuam txhab koom haum thiab ua tiav kev sib nrig sib ua tiav!
Peb sim ua kom zoo tshaj plaws, tuam txhab cov neeg siv khoom ", vam tias yuav yog qhov zoo tshaj plaws kev koom tes ua haujlwm thiab tus thawj tswj hwm kev lag luam rau cov neeg ua haujlwm, cov neeg muag khoom thiab cov neeg siv khoom, paub txog tus nqi sib koom thiab kev lag luam ruaj khov rauDaim kab xev ceeb toom, Daim kab xev ceeb toom, Pvc ceeb toom daim kab xev, Peb tau txais cov kev daws teeb meem zoo tshaj plaws thiab cov kws tshaj lij kev muag khoom thiab kev pab cuam. Nrog rau kev txhim kho peb lub tuam txhab, peb muaj peev xwm xa cov neeg siv khoom zoo tshaj plaws, kev txhawb nqa zoo, kev pabcuam zoo tom qab muag.