All purchased third-party and primary products from our own production must undergo three test and inspection phases up to the end of production:

• Initial inspection
  Takes place at all suppliers locally by our own external employees
  
  
• Incoming goods inspection
  Permanent spot checks according to standards and data sheets, e.g. for harmful substances (RohS)(RohS)
  
  
• Final inspection
  100% tests based on various measurement and test methods