Hi James, thanks for the post. Here is some more information about the Tangxi sword factory in Xiping county, Henan Province. In 2014 the factory was listed as national intangible cultural heritage, due to preserving the traditional way of Chinese sword making.
The photos below are recent from 12 April 2017 showing how the swords are still hand made in the factory today. Please also follow the link below where you can read a brief article and see additional pictures from the factory. Hope this helps:
Article about the Tangxi sword factory