During use, a “hissing” air leakage sound will occur from the upper part of the engine when running at idle speed. As the speed increases, the sound gradually disappears. While the sound in cooler and heat machine does not vary. At the same time, when the...
Vacuum cleaner is more and more popular nowadays. Because it can bring us great convenience. In another hand, it can increase the quality our living life. But most of us do not pay much attention to cleaning them. But in fact, you should clean the vacuum hose and the...
