成人AV在线一区二区三区_国内精品伊人久久久久妇_亚洲无AV码一区二区三区_蜜国产精品JK白丝AV网站,啊灬啊灬啊灬快灬深一区2区,悦少妇BBWaoi人妖 五,国产成人精品免高潮在线观看,久久久久久久久久久鸭,久久久91精品国产一区二区三区 ,别拔出来在里面尿

Detailed content

 

The single screw underground pump is mainly used for artificial lifting of oil exploitation and water extraction of coalbed methane.
Our company's single screw underground pump products through continuous improvement, perfect, has now formed a series of products.
It can be used for the production of low viscosity crude oil, but also for the exploitation of heavy oil, high temperature, high wax oil, high sand oil and high gas oil. The specially designed product linearity can be used in high speed well conditions.

 

Related products

more>>
Friendly link

tel

tel

186-6360-7979

consult