A tricycle is a fully enclosed tricycle. Since it has a fully enclosed carport, it can be protected from wind and rain when traveling, which improves the safety and comfort of the vehicle.
This type of product is used in three-wheeled caravans. Based on the hydraulic shock absorber, it is equipped with an additional external spring to increase its load-carrying capacity and act as a heavy-duty shock absorber.
This type of shock absorber uses the diameter of the shock absorber as the standard for product classification, including φ50, φ43, φ37, and φ33 respectively; it can also be divided into inner spring caravans and external spring caravans according to product results.