What is the difference between a single air chamber and a double air chamber?

Now in the production process of automobiles, the production is actually very common. In order to achieve a certain use value, the air chamber manufacturers have also made a lot of efforts. In traditional use, the vehicles are installed with a single layer. Brake chamber, so what is the difference between the double-layer brake that is being developed now?
The first is that the structure is different. The big difference between the brake chamber produced and the single-layer brake chamber is that the single-layer brake chamber is composed of one brake chamber, while the double-layer brake chamber It is double-layered, which can satisfy our form and make our form more powerful when braking.
Then, in fact, the double air chamber produced by the manufacturer after continuous efforts and graduate students uses a negative air chamber instead of a negative pressure spring. Using this new product can further adjust the air pressure of the negative air chamber and the positive air chamber to adjust the hardness of the front fork. , So it has a certain controllability, so it will be more convenient to use.