What's a better method for Roewe 550 to clean up carbon deposits?

Hello: With regard to your inquiry, all brands of 4s stores now use disassembly-free cleaning methods to clean carbon deposits, such as disassembly-free cleaning of air inlets, disassembly-free cleaning of fuel injectors and disassembly-free cleaning of three-way catalytic converters. Using cleaning equipment, carbon deposits can be removed without disassembling parts to start the vehicle. Cleaning only needs to remove the throttle body and idle valve, and the maintenance cost of each 4s shop will be slightly different because of the brand of cleaning agent. Secondly, some additives can also start to remove carbon deposits, such as fuel system cleaner, which can be directly added to the fuel tank to remove carbon deposits during vehicle operation. Although the disassembly-free cleaning is not thorough, it avoids the disassembly of parts and reduces the maintenance cost of the owner.