Who sells car air conditioners in Dalian? 4s shop is too expensive. I want to find a company specializing in air conditioning. Summer is here, and I don't know why the air conditioner is not cold. It'

Who sells car air conditioners in Dalian? 4s shop is too expensive. I want to find a company specializing in air conditioning. Summer is here, and I don't know why the air conditioner is not cold. It's urgent A model has a matching part of the model. Many times, different models of air conditioners are not interchangeable. Only model manufacturers, model suppliers and 4S shops of cars buy them. If it is not cooled, it may not be completely replaced by air conditioning. Find out what the reason is, it is estimated that the refrigerant is leaking, and where the air is leaking, just change one or two parts and add a refrigerant!