KROM founded in 1948, passed through more than 60 years endeavor,KROM has become one of the preferred brand manufacturers for valve actuators, its product scope including the electrically operated actuator, the air operated actuator, the intelligent valve locator, the limit switch and so on, had the outstanding performance and the good performance price compared to, widely applied in the chemical system, the electrical power system, the petroleum natural gas system as well as the...