Company general business items: petroleum machinery equipment, drilling accessories, pumping accessories, wellhead fittings, downhole tools, oil drilling tools, activities room, non-standard welding parts, level meter, pressure gauge, pressure transmitter, measurement instruments and accessories, valves, motors, transformers, converters, control cabinets, electrical components, pumps, water equipment, injection pump and accessories, pipe fittings, water-controlled device, ceramic valve core, rubber production; the company ?? production Elevators, rings, hooks, active elbow, thermal recovery wellhead, BOP, faucets, ground tackle, hydraulic BOP boxes, unloading anchor, casing collar, short sleeves, adjustable joints single-flow valve, high pressure oil azelaic, activities of the board, compensation, injection gas pipeline, clamps, clamp head, clamp assembly, thermal recovery wheel, valve, wellhead big four, the top wire, small Stone high pressure tee, nipple cover, nipple, plugs, pressure gauge fittings, light pole clamp assembly, locking rod, a suspension, a self-styled blowout preventer, the self-styled high-pressure core, BOP box, wellhead test equipment, wellhead wrench , hanging rope assembly, kava, Pa wheel, a sling, bolts, pulleys, crank pin, pumping twice governor, brake assembly, socket wrenches, brake wheel, connecting rods and other oilfield fitting