I don't recall ever seeing or reading about the brand. It strikes me as a brand that's not marketed in the states, Canada ? .. not sure, they've bikes im still learning of. Thron is a tubing from the mid-90s, an enthusiast's bike type of tubing. It's a good tubing just not the priciest. It replaced Chromor which had been used it Track Bikes as well as sturdy, light enough road bikes. Right now I just saw that Track Bike and others use Thron.