Is the flexible sleeve of the broken wall used as a second retest?
Safety nets, helmets, seat belts, insulated gloves and so on
There is a staircase in the middle of the tower crane, from the stairs began to climb
The national standard is 18kg. Color steel sandwich panel is a common product in the current building materials, do not chu chu dumpling seal festival over the extinguished Long can only be a good flame retardant and environmentally friendly and efficient. Caigang sandwich board has two layers of metal panels and the middle of the polymer core insulation from the suppression. With the installation is simple, light and efficient light and efficient features. And the filling system used to close the molecular structure of the closed, you can put an end to the condensation of water vapor.
