ControlAir is a worldwide leading manufacturer of precision pneumatic and electro pneumatic control products essential to automated industrial equipment, process control systems and instrumentation, laboratory research and analysis, energy management, fluid power, robotics, and valve automation applications. An ISO-9001: 2015 registered quality system assures tightly controlled specifications and processes, resulting in dependable pneumatic controls.

The company has an excellent reputation for high performance, quality products. These products include current-to-pressure (I/P) transducers, voltage-to-pressure (E/P) transducers, pneumatic-to-current (P/I) transducers, precision air pressure regulators, filter regulators, volume boosters, motorized regulators, rolling diaphragm air cylinders, valve positioners and custom engineered devices. ControlAir distinguishes itself from competitors in the unique ability to adapt its products to customer-specific applications through joint development projects and strategic design partnerships.

Founded in 1987, ControlAir's dedicated effort, in combination with vast knowledge of pneumatic controls technology and its markets, has provided the company with consistent sales growth over the history of the company. Continual investment in research and development has been made in order to produce a steady stream of new products that will fuel future growth. Development of a worldwide distribution network has LED to an active, international presence on every continent from North and South America to Europe, the Middle East and the Far East.

ControlAir is located in a 26, 500 square foot engineering and production facility in Amherst, New Hampshire. The building features a technology/application center; Offering ControlAir's customers CAD/CAM product design capabilities for quick response to demands for product customization to fit specific application needs.

ControlAir's customer-driven, "flat" management structure minimizes corporate overhead and staff, allowing the company to be very price competitive. In addition, its automated inventory control operation minimizes inventory, while assuring customers of in-stock availability and on-time delivery.

The company's capability to manufacture products to tightly controlled specifications and processes allows ControlAir to offer solutions with higher performance standards, increased dependability and tighter quality standards than might be found elsewhere in the market.

ControlAir (Chinese name: Kangqitong) established the ControlAir China Representative Office in Beijing in 2002, specifically responsible for handling the business and dealer management of the ControlAir brand in China.

Qingdao delifei is a subsidiary of Kangqitong China Office.

Qingdao Delifei also operates sensor products in the agricultural and animal husbandry industry.