>>They recently changed their site and product offerings so the first editor would not have known about expansion joints.
I went over to do the "minimal" update, that is, to add "expansion joints" to the current description. But it already mentions them.
I don't edit enough in Manufacturing to know whether those two categories are "too close together" for a site to be cross-listed in them, so I won't add a second listing, or move to the one to a higher level (my guess is that the former is more likely to be done in this case.) If you'd prefer one listing in a higher category, do a "change URL". If you'd prefer a second listing, then do an "Add URL" in the second category. (Of course, the final decision is still the editor's.)
Another thing you might consider -- obviously this factory resides in some locality (in BC). The website mentions a couple of addresses, but I didn't see any other location-specific information. HOWEVER: If the website had a bit more about the local factory (say, a page about what kinds of employment opportunities are typically available, a blurb about what public service projects the company or employees sponsor locally, etc...) as an occasional Regional editor, I would be VERY comfortable adding the site to the appropriate Localities category in Regional/N.A./Canada/BC/Localities/whatever. Some more active Regional editors might consider that the site ALREADY has enough regional relevance to be listed -- after all, there is a local phone number and address.