Solutions from item deliver the freedom and flexibility that cost-effective manual assembly systems require. Easy to assemble, easy to convert – self-explanatory functional elements can be configured and reconfigured rapidly.
For example:

This first-in, first-out (FIFO) rack is ideal for holding heavy material crates. The frame can carry up to 1,125 kg on three levels fitted with Roller Conveyors. Six castors ensure the trolley is easily manoeuvrable despite being three metres long.                                  

More example applications: http://www.item24.de/en/applications/lean-production.html