TST Industries Question

I love TST's products so far. I have the Halo GTR flush turn signals and low mount fender eliminator with the reflective license plate hardware.

My question is, what does TST actually stand for? Their "about" section lists their mission and history, but I could not find what TST actually means. Silly question, I know. But I have had a few buddies ask me and I don't know the answer. Before I wear a shirt of theirs, I would like to know the answer 🤣

Shout out to Scouts Out's YouTube channel for some awesome tutorials on installation.