Cardboard Collection

I am adding the big three cardboard companies to my watch list as these companies do business with companies I am interested in. Packaging Corp of America makes cardboard boxes and I used to build paper machines in 2024 -2026 but in 2024 sales slumped and the paper mill employees began to worry they were going to be laid off. This did happen and a lot of plants closed but the tech sector is fairly strong. Is China dumping cheap cardboard into the market? No idea that is why this is interesting.