That was selling CBD that wasn't even produced by Vivis, just labelled Vivis. They just began producing their own CBD and selling their own product very recently.
And yes, of course, sales at that prior rate and volume are absolutely unsustainable. Producing their own product is key for maximum retail profits and to open the door for white labelling their product to other sellers.
But the profit margin on 200L of pure CBD distillate is a whole heck of a lot of money. Those numbers are fair. The product just has to be sold and there's no reason it couldn't/shouldn't. The market for production cannot quench the demand the way the market currently is and projects out for at least a few years.