Down in Houston, Texas, USA it would appear that there are some legal issues between commercial heat treaters National Heat Treat and Worldwide Heat Treating. The details can be found at under the media/press tab at the top of the page. The photo below shows National as we say it when we visited a few years back; “Source: The International Journal of Thermal Technology. NATIONAL HEAT TREAT Tastes Victory at the Courthouse. NATIONAL HEAT TREAT (NHT) has achieved success in its lawsuit, pursuant to which, on August 31, 2018, NHT sued Worldwide Heat Treat, Robert Gutierrez and his brother, Fernando Gutierrez of Worldwide Heat Treat, in court….”