What practiced a single-product production and processing model that discarded waste?

Traditional industry has a single-product production model, and the waste is discarded.

Traditional industries have been utilizing a single-product production model, where waste is simply discarded. This is because it helps to shorten the production cycle and increase the output rate, thus improving its economic efficiency.

Eco-industrial waste treatment:

Not only from the environmental point of view to follow the principle of ecosystem tolerance and minimize the emission of waste, but also make full use of the principle of *** life and the use of the principle of the long chain, to change the past "raw materials - products - waste". -product - waste" to "raw material - product - waste - raw material".

Through the ecological process relationship, try to extend the processing chain of resources, maximize the development and utilization of resources, not only to obtain value-added, but also to protect the environment, and realize the whole process control and utilization of industrial products "from the cradle to the grave".