RECKLI Design Your Concrete! This is both a challenge and an opportunity at the same time. Based in Herne, RECKLI GmbH is a producer of elastic forms for the design of architectural concrete to the highest design standards. A team of 100 employees are the first point of contact for international planners and architects looking to implement unique ideas. RECKLI products have been used in pre-cast concrete plants and on construction sites worldwide for 50 years.