Shandong Molong Petroleum Machinery Company Limited, together with its subsidiaries, engages in the design, research and development, production, and sale of products and services for the energy equipment industry in the People’s Republic of China and internationally. It operates through Pipe Products; Oil sucker, sucker pump, sucker rod; Petroleum Machinery Parts; Casting and Forging; and Others segments. The company offers oil casings and drill pipe bodies; pipeline, boiler, fluid conveying, hydraulic support, gas cylinder, and structural pipes; three drawing equipment and accessories; sucker rods, oil pumps, oil pumping units, petroleum machinery accessories, and downhole tools; precision casting and forging products; and large ball valve bodies, mud pump liners, and floating ball valves for the petroleum industry. It also provides API and non-API casing products, line pipe products, precision steel pipes, hydraulic prop tubes, fluid pipes, cylinder tubes, and boiler tubes; tubular, multi-functional, inclined well, sand preventing, and feedback pumps; and cylinder liners and gate valves.