The biggest manuacturer of strut channel in asia, having exported to over 10 countries. Super quality, best service. 1. Sloted or unsloted 2.Hdg or prealvanized 3.With teeth or without teeth 4.Logo printings. 5.Lots of sizes:41*41*2.5/1.5/2 42*21*2.5*1.5/2 ..........