RE:EarningsI think it all makes sense.
The core product line is the level guages for crude oil and oil-related waste. In that segment things are leveling off in terms of orders at OEMs. So, within that core segment, the market will soon (or even already) be NOT growing--i.e., Titan will only be able to have growth in that segment through growth in market share, which (it sounds like) is happening.
But Titan is seeing real traction with regard to growing in new markets, particularly refined products. This is clearly what they're excited about.
I suspect the refined product market is just a way better market. For starters, it should be less volatile. Titan's core market was no doubt fantastic when fracking was booming back in 2010-14. Think of those wells with fifty trucks lined up all around the well and they all need a level guage. Wonderful when you have a fracking boom but it hasn't been like that post-2014 and it's not apt to be a great business sitting around waiting for that to happen again.
So I'd guess most of the time there's just more need for refined product trucks. But also, I'd think, the refined product market is far more weighted toward multi-compartment. Now for one truck you can potentially sell five TD100s instead of just one. Plus all the new fancy software for having it on your phone and keeping an eye on all those compartments.
If Titan really is turning the corner on the competition (and it soundslike they are) then this could be pretty big.