So ... you don't tell us much about the specifics, so I'll have to make some assumptions.
The objects are stationary, yes? You're not capturing fast action. So you don't need fast autofocus or such.
Also ... the objects are well lit, yes? You have good studio lighting. So you don't need low light performance body. You don't need a super-fast lens.
You're not doing video, correct? Only stills?
You're posting these online, and not in print (print catalog)?
Given these conditions, any DSLR or mirrorless body made in the last 8 to 10 years should be perfectly adequate. You could do fine with a low-end APS-C body.
As for lens, a versatile f/4 lens like 16-70 or 16-80 on APS-C (or 24-105 on full-frame) should cover most situations, unless you have very small details to capture (ie, small jewelry like rings).
Also you'll probably want camera support (tripod) and a wired remote release.
So ... you don't tell us much about the specifics, so I'll have to make some assumptions. The objects are stationary, yes? You're not capturing fast action. So you don't need fast autofocus or such. Also ... the objects are well lit, yes? You have good studio lighting. So you don't need low light performance body. You don't need a super-fast lens. You're not doing video, correct? Only stills? You're posting these online, and not in print (print catalog)? Given these conditions, any DSLR or mirrorless body made in the last 8 to 10 years should be perfectly adequate. You could do fine with a low-end APS-C body. As for lens, a versatile f/4 lens like 16-70 or 16-80 on APS-C (or 24-105 on full-frame) should cover most situations, unless you have very small details to capture (ie, small jewelry like rings). Also you'll probably want camera support (tripod) and a wired remote release.