Write a paragraph about the effect of PU sandwich panels in 70 words

PU sandwich panels have revolutionized the construction industry by providing an effective insulation system that is both lightweight and durable. The insulation properties of PU sandwich panels help to reduce energy consumption, making them a popular choice for energy-efficient buildings. Additionally, the panels are fire-resistant and waterproof, making them ideal for use in high-risk areas. PU sandwich panels are also easy to install and require little maintenance, reducing the overall cost of construction. Overall, the use of PU sandwich panels has significantly improved the efficiency and sustainability of building structures