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Anonymous users2024-01-23It is possible that resonance is generated to form a resonant cavity, which manages to dampen vibration with an elastic material.
Experience is something that can be learned by looking more, asking more, touching and thinking more, rather than simply asking a few people to know. I don't think I knew much about this back then, and I had questions. But after a few years of hard work, I have made small achievements in this industry, so it is very easy to list a few good brands for you. >>>More
What are the specifications for the integrated ceiling ventilation fan? The size of the integrated ceiling gusset is mainly 300mm*300mm. >>>More
Buy a new one and replace it, it's not cost-effective to repair it without much money, you can buy a better one!
At present, there are three types of household exhaust fans on the market: ceiling type, wall-mounted type and window type. The ceiling exhaust fan has a good appearance and can be installed on the ceiling of the living room, and the duct of this ventilation fan is shorter, so it is necessary to purchase a ventilation pipe that matches the pipe when installing. Because this exhaust fan is a one-way operation, can only discharge the indoor air, and the length of the pipe weakens the exhaust strength during operation, it is only suitable for installation in the living room with good air circulation, and is not suitable for installation in the kitchen, bathroom and other places, the price is about 100 yuan. >>>More
<> strong row stimulates the skin Xingming ventilation fan, and the fresh and empty sail is a good top.