Inventor

LIANG HAIYANG

CN2 patents

Patents

2 patents

US11841018B2Dec 12, 2023

All-metal conical combined screw pump suitable for petroleum field

WUXI HENGXIN BEISHI TECH CO LTD0 citations37

US11913312B2Feb 27, 2024

Intelligent oil extraction system using all-metal screw pump

WUXI HENGXIN BEISHI TECH CO LTD0 citations36