For the customer, the production must go on without problems and an energy supply system should accordingly function smoothly. That presupposes the effortless performance of all components and the cables used in them. igus® was the first company to develop a complete e-chain system®. chainflex® cables and e-chain® are supplied from one source and - according to application - offered with a system guarantee. The design principles that help to prevent machine downtimes all over the world have emerged and still develop from the know-how in cables that grew since 1989 and from a series of very laborious experiments.