Qinghai plateau science and technology development co., LTD. (formerly Xi’ning plateau engineering machinery research institute), is China's only company engaged in machinery and equipment plateau special environment adaptability, energy conservation and emission reduction technology research institutions. Also this company focused on mechanical equipment, design, manufacturing, and processing equipment, it is a member unit of China machinery industry federation, China construction machinery industry association executive director, director of China construction machinery association unit, science and technology enterprises in qinghai province. In 2016, huatal HBY-26b type closed cooling tower was ordered for cooling of medium and high frequency quenching production line.