Yeu diu kj thudt:- Lop
ngoi may phai khop mong, xau 16 bang day thep 000, buoc
ngoi vao Ii to.- Lop
ngoi 75vi~n/m2 (
ngoi vAy ca) hang tren phil 2/3 hang dum.- Lop Fibre xi rnang, ton rmii, tam nhira till moe s~t phai gm chat xa gO, ecu phai dem bangrang den cao su day S;3[r]