From its Northeastern Pennsylvania base, HTS Systems Lock N Roll manufactures patented hand-truck retaining systems for commercial delivery vehicles. Its signature Ultra-Rack Hand Truck Sentry System locks a hand truck securely outside the vehicle and provides quick access, addressing the route-time, cargo-space and safety problems of conventional storage. The company says its products are made in the United States at an environmentally friendly solar-powered facility and are used by delivery fleets across North America and beyond.