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What are some economical and practical materials for photovoltaic (PV) solar clamp accessories?

Photovoltaic Mounting Brackets solar clamp (Core Load-Bearing Components):

Hot-dip galvanized steel is recommended, offering a high cost-performance ratio in most scenarios. It boasts mature manufacturing processes, strong load-bearing capacity, and is suitable for residential rooftop photovoltaic systems and commercial ground-mounted power plants. The hot-dip galvanized coating effectively resists atmospheric corrosion, providing an outdoor service life of over 30 years.  It is 20%-30% cheaper than aluminum alloy brackets and more cost-effective than stainless steel. If roof load capacity is limited, economical aluminum alloy (lighter and easier to install) can be considered.

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Photovoltaic Encapsulation Film

EVA adhesive film is recommended. As the mainstream encapsulation material on the market, it accounts for only about 8% of the module cost, offering significant economic advantages. It possesses excellent adhesion and high light transmittance, effectively protecting the solar cells and improving module power.  With mature production processes and stable supply, its cost-effectiveness far surpasses high-end POE film, making it suitable for most conventional photovoltaic module encapsulation needs.

Photovoltaic Cables and Connectors

Copper core material is recommended for cables (good conductivity, stable performance, and more economical than silver-plated conductors, preventing excessive energy loss); engineering plastics (such as PC) are recommended for connector housings (excellent weather resistance and corrosion resistance, low cost, ensuring safe and stable outdoor electrical connections).

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Auxiliary Accessories (Fasteners, etc.)

For conventional scenarios, galvanized steel is recommended (low cost, basic corrosion resistance, and compatible with hot-dip galvanized steel brackets); for high-humidity/coastal salt spray environments, 304 stainless steel is recommended (better corrosion resistance than galvanized steel, and more cost-effective than high-end 316 stainless steel).