How do I check what joins a sofa has? Companies won’t tell me, and don’t have to tell me. I can’t start tearing apart sofas in the showroom. I’d love a world w

How do I check what joins a sofa has? Companies won’t tell me, and don’t have to tell me. I can’t start tearing apart sofas in the showroom. I’d love a world where companies had to simply, and truthfully, explain how their products were built, maybe even do some standard testing and tell me how long it’s likely to last.