国家/地区 中国（2）
IPC部 A（2）
IPC大类 B01（2）
IPC小类 B01D（2）
IPC
发明人 ZHANG B（2）
公开年 2021（2）
申请年 2021（2）
专利权人

Stirring and mixing device for spraying agricultural pesticide, has motor movably mounted with rotating rod through coupler, where position of bearing box close to upper side is fixedly installed with graphene plate.

SUN T, LIU B, ZHANG B

Face mask e.g. surgical face mask, comprises mask component to cover wearer's mouth and nose, and fastener engaging with mask component comprising air-permeable outer layer, inner layer located on inner side of mask component, and graphene layer, where fastener connects mask component to wearer.

ZHAMU A, JANG B Z, ZHANG B