国家/地区 中国（2）
IPC部 C（2）
IPC大类 C09（2）
IPC小类 C09D（2）
IPC C09D007/61（2）
发明人 LIU X（2）
公开年 2023（2）
申请年
专利权人

Anti-overheating electric floor heating module used in floor heating, comprises installation bottom case and electric heating film body, where electrothermal film body is fixedly installed in installation bottom shell, and lower side of electrothermal film body is provided with insulation layer.

LIU X, ZHANG X

Preparing coating for screw thread, comprises e.g. providing workpieces with screw thread, pretreating screw thread part of workpieces with screw thread; sandblasting workpiece with screw thread after pretreatment; and preheating workpiece with screw thread after sandblasting.

SUN J, WANG Y, WANG L, LI R, SONG X, LIU X