ជប៉ុន បានរកឃើញលោហកម្រ១៦លានតោនមានតម្លៃមហាសាល/Rare metals​ of Japan_Pali news kh

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Rare metals are a group of 17 substances used to produce electronics and other high-tech products. The Hight-Tech products we use today, ranging from mobile phones, tv to X-ray, missile and spacecraft, use rare metals to produce.
In fact, the metal is not a rare substance. Metals rarely exist in many other countries besides China, including the United States. But only China has the rarest metal mining business, accounting for 97% of global market demand.
According to the US Geological Survey last year, there were approximately 120 million metals worldwide around the world, of which 44 million tonnes were in China, 22 million in Brazil and 18 million in russia.
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