Shanghai Controlsmart Co., Ltd. was established in 1997. Our business focuses on HVAC control and energy management in critical environments. We are constantly investing in R & D, advanced production processes and testing facility guarantee high quality venturi valves. We provide control solutions for airflow, pressure, IAQ and temperature for critical environments. Achieve convenience, reliability and energy saving in operation. Since the first venturi valve was installed in the project in 2008, Controlsamrt has been continuously innovating in products and applications, and has several patents. Our manufacturing standards and product quality are at the leading level in the industry. In 2014, the Controlsmart venturi valve was sold to Canada and Singapore and expanded to more Asia Pacific regions now. Our venturi valves are used in different industries. There are new users in universities, hospitals, institutions, pharmaceutical companies, and petrochemical industries. It provides the most reliable environments for personnel safety, precise experimentation and product quality.