... weight structrul steel steel structure of sandwich panel 1. Item Name: steel structure warehouse/ workshop2. Steel Material: Q235B and Q345B3. Connection ... roof and wall panel, included both types:a. Heat-Insulating material( EPS, Glass wool, Rockwool, PU, etc.)they have different ... 7mm), color, type, etc.E. You can choose freely the material of door and windowsF. We also have so many accessories, for ...