Double-wall T304 stainless steel suction head, 2.25-inch inlet × 9-inch long outlet, 4.50-inch ×3.25-inch. The car owner wants his car to be more pleasing to the eye and look better and better, so he chose to install carbon fiber tail at the back of the car. Only when modifying in this aspect, it needs to be carried out according to a certain manufacturing method. For non-professionals, this operation is almost difficult. Therefore, only after a complicated and patient production process can we realize the difficulty of making carbon fiber parts and finally understand the reason why carbon fiber parts are expensive.