... . Also, we will supply all technical support during installation and after-sale service. 3. We have pretty good preservative treatment on this ... conditions. b. Hot-dipped galvanized, when the thickness of parts is less than 3mm,thickness of hot-dipped gal is ... for example, steel bracket, bolts, self-taping screw, rivet, inter and outer cullis, rainspout, trimming sheet, glass cement, etc. you can ...