Workplace injuries are a major problem for blue-collar workers: More than 3% of manufacturing workers suffered a workplace injury in 2015, according to the Bureau of Labor Statistics. Brooklyn, N.Y.-based StrongArm Technologies makes wearable protective technology to help industrial workers avoid injury. Its exoskeletons, which retail for $275 to $630, align the body to reduce arm fatique, avoid muscle strains and sprains, and prevent back injuries.