... DIN Material: Q345,Q235,sandwich panel,corrugated steel plate Commodit light steel structure workshop SpecificationsStandard GB ,AISI , ASTM , ... proof, B2 grade ,Earthquake proof, Wind resistant , welding test , ultrasonic testLife over 35 years Package: normal package , ... design .2. Quick installation ,easy disassembly and moving ,light for transportation3, High-strength ,heat and sound insulation , ...