国家/地区 中国（2）
IPC部 F（2）
IPC大类 F26（2）
IPC小类 F26B（2）
IPC F26B025/18（2）
发明人 ZHANG L（2）
公开年
申请年
专利权人

Vacuum freeze drier for intermittently defrosting, has left and right water collecting cabs that are connected with exhaust pipe, exhaust pipe that is connected with air pump, and are connected to drain pipe.

ZHU B, ZHANG L, ZHU L

Graphene electric heating film oven, has box body provided with graphene electric heating film that is located on path of air convection, where positive and negative electrodes of film are connected to power supply line in electric control cabinet.

ZHANG L