Suction-type fan square in 2009 are newly listed products, vacuum-style square at the original galvanized fans are fans of the basic material of negative pressure on the birth of an improved, negative pressure blower-type rectangular galvanized materials in 2009 are the main fan Product sales.
一、Product Name: LH-DFJ-A05  Lan hao-style rectangular suction fan
二、Product specifications parameters:

三、Vacuum-style square-shaped fan working principle:
  Lan hao development of negative pressure ventilation fan-style square, are the use of air convection, the principle of negative pressure ventilation design. Suction fan installed in poorly ventilated places, normal working hours, use of mechanical moving fan can operate, to relocate their factories to stagnant heat, smell, smoke and Ukraine, in the shortest time possible the rapid discharge outdoors, at the same time put the fresh outdoor air and interior recycling exchange, so as to achieve cooling to improve the ventilation workshop environment.
四、Vacuum-style square-shaped fan features:
（一）Good quality:lan haois the introduction of negative pressure blower Germany technology to produce high-quality vacuum blower.
（二）Super-convenient: Manual shutter control, at run-time fans need not be normal ventilation and lighting.
（三）Low-input: central air-conditioning fans are a total investment of 1 / 5, similar ventilation cooling works best value.
（四）Ultra-environmental protection: no compressor, no refrigerant, no pollution, low noise.
（五）Very healthy: constantly provide fresh clean air, to increase the oxygen content of air.
（六）Very simple: easy installation, low maintenance, easy to operate, no need for maintenance professionals.
五、Application areas:
▲Almost all the required cooling or ventilation of the premises can be used, such as:
1、Industry: garment factory, plastics factory, electronics factory, electroplating plants and lines factory, shoe factory, toy factory, embroidery works, metal works, machinery factories, etc.;
2、Commercial: shopping malls, supermarkets, hotels, entertainment venues, hotels, Internet cafes, etc.;
3、Public: hospitals, railway stations, gymnasiums, auditoriums, schools and so on.
4、Livestock: pig farms, chicken farms, rabbitry, etc.;
5、Agriculture: garden flowers, greenhouse, aquaculture base;