Security market ushered in distributors spring

The security industry has experienced more than 30 years of development. In the early days of development, the number of domestic manufacturers was relatively small, and there was a shortage of independent brands. Many distributors were mainly operating foreign high-end brands. In the case tha

Fluorite deposit type in China

The types of fluorite deposits in China are as follows:

table   Fluorite deposit type in China

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