Terahertz waves can penetrate many materials such as plastic, ceramics, textiles and wood and are therefore ideal for non-destructive testing of objects. Terahertz imaging – similar to X-ray and ultrasound testing – is used to generate images of the inside of the object. In this way, manufacturing-related defects or weak points in the object can be detected at an early stage during production. Terahertz technology therefore makes an important contribution to industrial quality control and conserves resources.