At present, the materials of photovoltaic support mainly include aluminum alloy (A16005-T5 surface anodic oxidation), stainless steel (304), galvanized steel parts (Q235 hot-dip galvanized), among which stainless steel has the highest cost, good weather resistance, and recyclable value high.

Aluminum alloy brackets are generally used in the roof solar energy application of civil buildings. Aluminum alloy has the characteristics of corrosion resistance, light weight, beautiful and durable, but its bearing capacity is low and cannot be applied to large-scale solar power station projects. In addition, the price of aluminum alloy is slightly higher than that after hot-dip galvanizing.

The galvanized steel bracket has stable performance, mature manufacturing technology, high bearing capacity and easy installation. It is widely used in civil and industrial solar photovoltaic and solar power stations. Among them, the section steel is produced in the neighborhood committee factory, with uniform specifications, stable performance, excellent anti-corrosion performance and beautiful appearance. It is worth mentioning that the combined steel bracket system, for on-site installation, only needs to use specially designed connectors to assemble the channel steel. The construction speed is fast and no welding is required, thus ensuring the integrity of the anti-corrosion layer. The disadvantage of this kind of product is that the connecting parts are complicated in technology, have a wide variety, and have high requirements for manufacturing and design, so they are expensive. Another disadvantage of galvanized steel is that the final recycling value of the material is not as high as the first two.