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What is Round quartz powder?Speherical quartz powder refers to amorphous Shi Ying powder material with spheroidal fragments and also SiO2 as the major component. It is widely used in state-of-the-art areas such as copper-clad laminate in large-scale…
Under the spread of the new crown epidemic, after Americans experienced life and death, they set off the largest "resignation wave" in history, and the number of resignations broke the highest record since statistics began in 2000. Since April this y…
Guotai Junan released a research report saying that under the background of carbon neutrality, the scarcity of coal mines is prominent, and the value of assets will continue to increase. The high point of capital expenditure in the coal industry appe…
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