国家/地区 中国（2）
IPC部 B（2）
IPC大类 B29（2）
IPC小类 B29B（2）
IPC C08K003/04（2） C08K003/22（2）
发明人 LI Y（2）
公开年 2022（2）
申请年 2022（2） 
专利权人

High temperature resistant packer sealing rubber cylinder is useful in oil field, comprises e.g. 100H type tetrapropylene fluorine rubber, 100S type tetrapropylene fluoride rubber, N990 carbon black, N774 carbon black, calcium stearate, and triallylisocyanurate.

YANG Z, LI Y, LUO B, FU W, LV Z, CHEN K, LONG X, CAO X, LI H, REN J

Plate heat exchanger unit comprises base and multiple positioning rods arranged on base, where positioning rod is provided with top plate, and heat exchange space is provided between top plate and base, and heat exchange space is provided with multiple groups of first heat exchange plate.

LI Y