Guillermo Novo
Analyst · UBS.
Let me make some comments and Kevin, maybe you want to talk. I think that the issue in responding to that, it's hard to respond at a total level, given just volumes in these businesses where they're additives. You can't compare preservatives or biofunctional volumes to HEC or other areas. So we look at it more segment by segment on what's happening to the volumes because then you can get some distortions.
As you said, clearly, the reduction in our portfolio actions will reduce volume, but we're taking out costs, and it wasn't at a significant profit. So I do think sales volume versus production volumes. Sales volumes you're going to see, as Kevin said, some continued increase. And if you look at the high-volume areas for us, PVP -- high volume significant from a loading perspective. PVP, HEC, our Benecel and our Klucel lines, all of those were expected to see continued momentum.
We got to get to the normalization, which I would say it's more somewhere in between 2021 type volumes in those areas. 2020, 2021, that we'll start getting that momentum back in and it should be in the mid-single digits once we normalize. So that's the biggest driver. In the other areas, it's volume, but you can't compare the total numbers because the volumes are significantly lower -- higher value, lower volume.
Biofunctionals as an example, you don't see it on the volume side, but it's a high price per kilo. That one was significantly down. Some of the major customers were down because of travel and things like that. And China was down significantly, a very important market. So the recovery there will be very important for our volumes.
Equally, the Preservative business was also impacted similarly, a lot of the growth that we have in Asia and all that, and that's starting to pick up. So those -- you won't see it so much on the total volume lines. But on the revenue line, we expect that to be higher than mid-single, more relative to the performance in the last year, those will pick up much, much more.
And we can go out segment by segment, but it's very hard to give you just an overall number just given the dynamics and the differences between our business. But Kevin, do you have any other comments you would give?