Wel­ler Tools GmbH
Carl-Benz-Stra­ße 2
D - 74354 Be­sig­heim
(location seems to be in Mündelsheim, though.)
Phone: + 49 (0) 7143 580-0
Fax: + 49 (0) 7143 580-108
Mail: info@​wel­ler-​tools.​com 
https://www.weller-tools.com/professional/EUR/de/Top-Menu/Kontakt/Anfahrt 