Looking back on the first one, the firewood is on the road!

Is there a picture that evokes the collective memories of generation after generation? Of course, there is a picture of 60 years ago, and it is still a picture from the People’s Daily. 1958 Shanghai Diesel Engine Factory Advertising After reading this picture, is it a moment to feel

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Cobalt-rich crust mining technology

Cobalt-rich crusts (also known as manganese crusts, iron, manganese crusts) mineral resources is one of the most attractive bottom of the ocean, there is depth of 500 ~ 4000m Fu seamount, the slope of the island, rich in cobalt, platinum, nickel, manganese, copper, iron, phosphorus, Chin, zinc, lea

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