一、EQUIPMENTS FOR WELL CEMENTING  & WELL REPAIRING OF PETROLEUM

二、PUMPING UNIT FOR PETROLEUM

1.HETEROGEREOUS PUMPING UNIT：Series of heterogeneous pumping unit are improved on the basis of the conventional pumps unit in order to improve the dynamic performance and reduce energy consumption. Designing and manufacturing of this kind of pumping units not only have the advantages of the conventional type pumping unit, but also are remarkable in energy-saving.

2.CURVED BEAM PUMPING UNIT：Bending beam pumping unit uses partial balance under oil beam, possessing great balancing effect. The peak deceleration point twist tycoons have small motor power and saves about 20% of the energy.