... been supplying Daqing Oilfield(China) with PC Pumps drive system at a large quantity from Year 2007.Main FeaturesLarge torque ... viscous oil well, and sand containing well, etc. Beltless, no speed reducer,low-noise, safety, especially applying to the oil wells ... designed by Stars itself, matching perfect, service convenient. Main Parameter System Series SML Control cabinet Model No. HX-600HX-1000HX-1500 ...