Cloth warning tape is typically made of fabric material and is often used in construction sites, warehouses, and other industrial settings. In contrast, PET warning tape is made of PET (polyethylene terephthalate) material, which is a durable and tear-resistant plastic. PET warning tape is commonly used for marking off dangerous or restricted areas, as well as indicating potential hazards. It is also designed to be highly visible and usually features bold warning symbols or text.