This means a little industrial chain. Waste paper is packed in the waste paper recycling station and then sent to the paper mill. Plastics have many uses, and finally packaging. There are special recycling companies or self-employed recycling companies, and then they are handed over to traders to manufacturers who use plastics, such as pipelines, but they are generally not high-grade. Metals only go through the same process as plastics and finally enter the smelter. What you said about the board is not very clear. After analysis, it may be a floor made of recycled wood, and another may be sold to a pulp mill to make wood pulp.