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HUNAN TB VALVE CO.,LTD is a company which selling quarter-turn gearbox and Multi turn gearbox like Korea Sambo,TMG-korea, or Auma, Rotork. We have not such long  history like Sambo industrial co.,ltd,TMG-Korea, Auma, Rotork, progear,alder, diamond gear, dynatoreque, emerson,manxnovo, MBI-Tech italia, I-tork, mastergear,xanik, usimontec,They are dragon businesses on Industrial actuators. But we are growing step by st...

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