... , heat preservation, convenient construction, attractive facade, environment-friendly(2)All panels shall be packed according to various length and width indicted ... ≤40mm,tensile strength of small, fragileLifeNo pulverization phenomenon, can use for a long timeLong time exposure on the outside will turn ... me !Contact: ada(at)wwsteel(dot)cnPhone: +8615069086312Skype: ada19880109 metal roofing material