Please close it! Dalan Motor summarizes the difference in fan characteristics between ordinary three-phase asynchronous motors and variable frequency motors

The price channel provides today's tantalum price quotes, now the tantalum market quotation (February 26, 2019):
(February 26, 2019) Tantalum price quotes today Product Name Product Price Price Unit Change

Tantalum offer	3600	Yuan / kg	level

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