1. We are a direct manufacturer of petroleum machinery in China.we have more than 30 years design and manufacture experiences and we got API certificate of our products. we have our own fabrication center where we make all the parts that compose the machinery. Our main products are: triplex mud pump,drilling pump,drilling rig,solid control system,centrifugal pump,and all the spare parts that compose the drilling mud pump etc. if you are interested, please do not hesitate to contact me for more information,I'm at your service.