They are composed of stainless steel and are light weight Strong compatibility, aluminum guide, photovoltaic car shed and C steel ( Usteel) guide matching In the surface of bracket have different holes to make installation more and Versatility, fit for photovoltaic roofs, photovoltaic ground, photovoltaic shed and photovoltaic, application of for protection and grounding for solar photovoltaic systems in vegetable greenhouses It is suitable for various installation environments, Manufacturer: Kaeltsyn