SR Smart Resources is a UK-based company that specializes in exporting waste materials from the tire industry such as car tires, truck tires, and tire byproducts. They ship materials in 40-foot containers that can hold up to 27 tons. The company exports materials for recycling and as fuel, including shredded tires used as tire-derived fuel in cement plants. They also export butyl inner tubes which can be recycled to manufacture reclaimed rubber.