... using time7. high strength and stiffness, high weight bearing.8. sound insulation and heat insulation; antisepsis and damp proofing; waterproof and ... beamPurlinC or H section steel purlinBraceordinary, high strength boltRoof &wallEPS,Rock wool , PU sandwichDoorSliding or rolling doorInsulation panelEPS sandwich panel ,rockwool,PU ...