I think it is the five doors and windows and experience out of people's own perception, some time ago the industry launched a door and window called air-conditioning windows, that is to say, people's future expectations of doors and windows through doors and windows, building between the two will let a lot of consumers throw away a lot, a lot of need to use the new wind, air conditioning, or air-conditioning on the physical aspects of the injury I think this is very important.
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