Dab tsi yog steel platform?
Steel platform haum rau cov tsev khaws khoom ntau dua, cov khoom thauj hnyav, xav tau qhov loj-ntev, qis cia muaj peev xwm loj, tuaj yeem siv tag nrho ntawm qhov chaw, txuag nyiaj txiag cheeb tsam. Kev siv tau yooj yim ntawm qhov chaw, qhov chaw sab saud tuaj yeem siv los ua chaw cia lossis chaw ua haujlwm, nws yog dav siv hauv cov khoom siv hluav taws xob, khoom siv kho mob, kev sib txuas lus, thiab luam ntawv.
