Founded in Shanghai in 1992, Delta focuses on providing solutions for industrial automation, video display and control, network communications and other fields, and its parent company is Delta Group, a leader in the power management and cooling industry. Delta has always adhered to the attitude of environmental protection industry, and is one of the earliest manufacturers in China to develop green and low-consumption products, and is also a benchmark for energy conservation and emission reduction.
 
Delta's fresh air ventilation products belong to the category of building automation, and due to the integration of the Group's power electronics and control technology, its ventilation fans perform well in terms of energy saving, power saving, and service life. Compared with conventional AC motors, the new DC motor reduces consumption by more than 50% and is wrapped in flame-retardant materials to reduce operating losses and greatly increase service life. In addition, Delta's ventilation fans also have multi-level air volume control, so consumers can set the air volume according to their actual needs. Moreover, the air volume is controlled by constant air volume within a certain pipe length range, which ensures the effect of air displacement. This information has a clear product ratio on the official website, and its product overview table can be downloaded, which is convenient for consumers to compare and buy, which is very thoughtful.
 
Delta's main ceiling type, BPT series is one of the Volkswagen series, using integrated ceilings, low air volume energy consumption is about 10W, two air volume settings, simple adjustment, users open the strong wind gear for the first time, can quickly replace the indoor air, if you need to switch to a weak wind gear, turn off and restart. Among them, BPT30X also has a half-horizontal bar, a full horizontal bar, and three kinds of panel designs, consumers can choose according to their preferences, and the price of this series is between 250-370 yuan. The VFB series is Delta's high-end products, with prices ranging from 600 to 1,500 yuan. The products of this series have a variety of functions such as temperature sensing, infrared motion sensing, lighting, and adjustable air volume in four gears.
 
The VFA series is Delta's only window-type series, which uses a DC motor with a power of only 2-4W. In addition, it adopts multi-blade wheel blade and streamlined flow channel design, which effectively reduces the operating noise and controls the noise at 24-38dB. The VFA series specifications are unified to 6 inches, the mass is less than 1kg, the overall structure is small, and the price is 200-300 yuan, which is relatively expensive in window products.
 
Because Delta's products have outstanding low energy consumption, good overall performance and low noise, their prices are generally higher than those of other domestic brands.