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