Most plastics have strong corrosion resistance and do not react with acids and bases.
Low manufacturing cost of plastics
Durable, waterproof and lightweight
Easy to be molded into different shapes
Plastics can be used to prepare fuel oils and fuel gases, which can reduce crude oil consumption.
When recycling waste plastics, classification is difficult and economically uneconomical.
Plastics are easy to burn and produce toxic gases when burned.
Plastics are made from petroleum-refined products and oil resources are limited.