Joists are structural components used to support, secure, and connect flooring, wall panels, and other panel materials. Common materials include moisture-resistant and corrosion-resistant wood-plastic composite (WPC), solid wood, and metal. They feature quick-connect design features such as grooves or protrusions, evenly distributing loads, improving construction efficiency, and extending service life. They are widely used in flooring, wall, and ceiling installations. When purchasing, consider the material's durability, dimensions, and surface finish. With the promotion of green building materials, environmentally friendly WPC joists are becoming a mainstream choice for modern renovations due to their recyclability and low emissions.