Founded in 1978, Roser USA, located in San Francisco, California, is a leading manufacturer of Stone Coated Steel Roofing Systems. Known for its energy efficiency, beautiful lightweight design, and superior craftsmanship, Roser USA offers an array of materials, colors, and styles. The high strength steel products are lightweight, easy to install, and cater to both homeowners and light commercial buildings. With distribution centers across the US, Roser USA ensures quick and efficient delivery. Their quality guarantee ensures that all products meet the needs of professional builders, contractors, and homeowners.