WOKO in Duisburg, Germany, is specialised in the development of lifting magnets and magnetic systems. WOKO products are used everywhere on the world. www.woko.de

Serbot in Buochs, Switzerland, produces mobile robot systems, for cleaning solar panels and facades of high rise buildings. Conventional facade lifts are also part of the portfolio and can be combined with the robots for unprecedented flexibility. SERBOT has a vast know-how in the design and development of tailor made engineering solutions. www.serbot.ch