According to Wikipedia Lengefeld is a former municipality in the district Erzgebirgskreis, in the Free State os Saxony, Germany. On 1 January 2014 it was merged with the municipality Pockau to form the town Pockau-Lengefeld.
https://en.wikipedia.org/wiki/Lengefeld
N#127990
This website talks about the Wittig and Schwabe Fabrik:
http://www.hotelportal-sachsen.de/wittig-fabrik.html
Wikidata: Q46869