Extrusion Aluminum Slotted Rail Solar Panel Frame and Supporting System Short Description: The aluminum rails are designed for tile roof and tin roof. It comes with high quality, high strength and low cost. · Min.Order Quantity: 500 Set · Supply Ability: 2000 Set/Sets per Month · Port : Tianjin,Shanghai,Qingdao · Payment Terms: L/C,D/A,D/P,T/T Product feature: High class anodized aluminum Enables simple, fast and cost-effective installation Can be applied to universal roof