... 25,,7steel eaves gutterthick 3.08steel structure fastenerstrength and ordinary bolt SecondEnveloping system 1Roof panelpainting single steel board2InsulationThick 50mm3Canopy boardV- ... board4Wall panelEPS Thick50mm battenboard5Waterproof board and scrollpainting board6Enveloping board accessoriesbolt,seal gum,bottom sub ,7Doorbattenboard sliding door8WindowAluminum alloy sliding windows9DownpipeΦ ...