Inappropriate selection of roofing materials for projects such as factory buildings and carports can increase maintenance costs. When selecting PVC roofing tiles, it is important to evaluate the manufacturer’s production capacity (annual output exceeding 10 million tiles) and raw materials (virgin PVC) to avoid premature brittleness and discoloration caused by recycled materials. Quality can be assessed by requesting samples via mail to check their weight and odor (no pungent smell). If a supplier provides samples and clearly specifies the warranty period, the product’s quality...
