Can the product be used at both 50HZ or 60HZ?.
HiBREW Coffee Mill Automatic Electric Coffee Grinder with 31 Gears for Espresso
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ZYLDDS Home Coffee Bean Roaster Tool,1600W Coffee Roaster,Automatic Electric Coffee Beans Roasting Machine, 0-250℃ Adjustable Temperature
CGLYYDS Home Coffee Bean Roaster Tool,1600W Coffee Roaster,Automatic Electric Coffee Beans Roasting Machine, 0-250℃ Adjustable Temperature
