Along with the economy boom in China, the production and consumption of mobile phones and electronic products have been increasing vigorously.
A board is recycled from these circuit boards. Before recycling, metals have been taken out e.g. gold, silver and other rare metals, liked lithium, beryllium, niobium, tantalum, germanium, gallium, etc. by high heat. still, this process has caused far-reaching environmental damages, i.e. toxic water and polluted gas emissions.
[Recycling] is an efficient topic of environmental protection. When we go deeper into the background, we may dig out the powerlessness contradictions behind.