Schengen crucial to just-in-time producers03/07/2016March 7, 2016Ziehl Abegg produces motor parts in Hungary and delivers them to its plant in Germany so they arrive just when they’re needed.https://p.dw.com/p/1I8lSImage: picture-alliance/dpa/M. BalkAdvertisement Delays due to border controls mean the company would require more warehouses for its stock.