Steel materials and light weight Different holes to make installation more and safe It is suitable for various installation environment Strong compatibility, aluminum guide rails, photovoltaic car shed and C steel ( Usteel) guide rails matching Fit for photovoltaic roofs, photovoltaic ground, photovoltaic shed and photovoltaic, application of for protections and grounding for solar photovoltaic systems in vegetable greenhouses, Manufacturer: LXJLXD