ST Equipment & Technology LLC (STET) is a developer and supplier of specialized processing technology for beneficiation of fine particle materials. Founded in 1989, ST capitalized on proprietary technology to develop a unique, triboelectrostatic bel separator. Since then, the compact and easy to permit separator has beneficiated fine materials within several industries. Today, the US based company has deployed many separators, with well over 100 machine years of operation, in North America, Europe and Asia. A state of the art Engineering Center in Needham, MA, USA conducts research and development, including pilot testing of new materials and further development of the technology.