There are more than 70,000 tons of electrical and electronic waste from which the more than 30 kilos of gold, 3,500 of silver and 2,200 of bronze with which the Olympic medals were manufactured come
There are more than 70,000 tons of electrical and electronic waste from which the more than 30 kilos of gold, 3,500 of silver and 2,200 of bronze with which the Olympic medals were manufactured come