... kinds main products, such asï¼ÂÂÂÂÂŒmast of drilling rig and workover, pumping units, subsurface sucker rod pump, sucker rod, tubing ... The main products are drilling rig drived by mechanical, compound and electric, workover rig, pumping units, sucker rod pump, sucker ... rod, tubing and casing, mud pump, drawworks, rotary, crown block, drilling fluid cleaning ...