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There is no need to paint the wardrobe with all-aluminum alloy, and there is no formaldehyde.
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The best one with metal, no pollution, beautiful and generous.
100N;4x10³>2000Pa;3x10^4.
Your idea is good, but whether a restaurant can grow smoothly is affected by other factors. quality and innovation of dishes, hygiene, quality of service, etc.
Ventilation is related to the dryness and comfort of the entire bathroom, and if the air is not circulated, the smell will not dissipate. >>>More
First of all, you have to find out why it is getting worse and worse, and there must be a reason why business is getting worse. Whether there are more stores next to it and there is a lot of competition, or the flow of people is getting less and less, just find the cause of the poor business and prescribe the right medicine.
The first thing to do is to find out what is causing the deterioration.