Google Business listing not really showing "secondary business" in search/maps

I have a business that does Pallets/Scrap Metal. My original google business listing years ago was for pallets...that is what it was confirmed under and what the primary business listing is. I do well locally in results for that.

However, the secondary business category of scrap metal is non-existent basically. I know that because I get basically zero calls for that after going on a year and when I search the relevant terms I don't show up.

Is there any way to convince google that I do, in fact, operate two different lines of business under the same company name?