EWI is pleased to welcome Portable Solutions Group, Inc., the parent company to DropBox Inc. and Modular Security Systems Inc. (MS SI), to membership. DropBox, Inc. is a container modification specialist which provides both standard containerized products and custom builds for shipment worldwide and has a longstanding relationship serving the industrial, military and commercial markets. MS SI provides modular security entry turnstiles, guard booths, and secured entry portals. Portable Solutions Group, Inc. is based in Worthington, KY.