![](http://www.masa-petroleum.com/wp-content/uploads/2019/03/Liner-Tubing.jpg)
· Indeed, combined by two different diameter pumps
· Uses the hydraulic feedback theory, reduce the broken off of sucker rod
· Long service life
· Very good anti-corrosion property
· Uses the hydraulic feedback theory, reduce the broken off of sucker rod
· Long service life
· Very good anti-corrosion property