In the crowd city, so many people to share with limited space, sometimes you feel like you can't catch your breath in the MRT, subway even the bus as rush hour. In the office, this situation would also happen, if you want to save some cost on the electricity bill, the portable ventilator would be a great choice as the alternative solution.
Usually the air conditioner would be the first image when people try to deal with the space need more air flow. However, it would cost a lot if it was applied in office inside whole building and the factory with open space. The design of portable ventilator is allowed to have great performance of generating the air flow in certain range, and it needs less electricity to operate. In the space like factory with volatile material and chemical products, this would be important for the health of every stuff working there.
Besides, it could be applied in different place as well. To assemble the conveying equipment for some bulk quantity goods with light weight and small value, the flexible duct is one of the common solution as the passage between packing station and delivery station. And the portable ventilator would be able to supply the air for the assembly of flexible duct, it would be able to finish this task efficiently with its aid.