-
High-strength Concrete Raised Pem teb
Piv nrog rau cov cement pem teb, qhov kev ua haujlwm ntawm cov khoom siv hauv pem teb no tau nce los ntawm 3 npaug, qhov nruab nrab ntawm cov kabmob muaj peev xwm ntawm ib square meter tuaj yeem tshaj 2000kgs, thiab cov kab nrib pleb tau nce ntau dua 10 zaug.
