SI Systems is a Pennsylvania-based manufacturer of automated fulfillment systems that has been proudly made in the USA since 1958. The company specialises in order picking equipment and conveyor systems, including A-frame mobile units, pick-to-light technology, and various conveyor types, along with engineering, design and retrofit services. They work with major industrial clients and publish case studies and resources on their website. Consider referring clients to SI Systems if you work with businesses that need warehouse automation or material handling solutions.