First of all, we should learn the knowledge and market price of technology and various wastes, so as to get higher returns. For example, in conventional plastic recycling, we need to know the uses and prices of various plastics and polymers, and so do metal materials. If the technology can be well maintained, some purchased waste household appliances can be repaired and sold to second-hand channels, so it is not the price of waste products.

Then the sales channel can go to some related manufacturers for consultation, or publish some supply information through the network. Now that the network is so developed, interested people will take the initiative to pay attention and consult.

In essence, there is no distinction between high and low business. Long-term business that can maintain profit margins is a good project. Scrap purchase is such an industry. If you can find the doorway inside, you can quickly accumulate your initial wealth through your own development and accumulation, which is more profitable than many industries that look glamorous.