MÜLLER metal processing + Locksmith We are a young, dynamic company with qualified personnel. Our range of services extends from mechanical processing on weldments to general locksmith and metal construction. MÜLLER metal processing + Locksmith was established in 2005 as a classic one-man locksmith under the name "metal builder Sven Müller". By konsequnte implementation of our corporate philosophy, the power spectrum has been constantly expanding. Here, we developed a service provider in the metal processing. Philosophy: If you only ever do what you can already You'll also only remain what you are already.