The design of the car muffler pipe is round and flat, and it is printed with a variety of colors on the surface, emphasizing the strong decorative sense. It is also very practical and is often used in various passenger car models. The minimum order quantity is 10 or more, and the packing quantity is 1 piece per piece. The wholesale reference price is 420 yuan per piece. The working principle of the car muffler is that its exhaust pipe is composed of two pipes of different lengths, which are separated and then converge; The length difference between the two pipes is equal to half of the wavelength of the sound wave emitted by the car, so that when the two sound waves superimpose and interfere with each other, they cancel each other out and reduce the sound intensity, making the sound smaller, thus achieving the effect of noise reduction. The car muffler is commonly known as the "loud drum", with model A0651, made of stainless steel material, with a size of 60CM*25CM*10CM.