Urea is the implementation of national vehicle emission standards Ⅳ essential accessory products, popularized in the market difficulties, the state should give some policy support. "We recommend that the state has adopted the policy of fiscal subsidies for qualifying vehicles for heavy vehicles added urea subsidies to help the car industry through the use of urea initially difficult period." The official said. Car market is facing another dilemma urea is many counterfeit products caused confusion in the market, which, with urea car company official suggested: "The permit system should be implemented as soon as possible to ensure the production and supply of technology and hardware manufacturers can urea production to meet the testing requirements of the vehicle, allowing only dealers with the production of qualified enterprise products. Germany has been certified for vehicle management with urea production and sales, this system is not yet established, national authorities hope the car with urea Manufacturer certification management. "He also pointed out that the mechanism should be established product sampling, compliance penalties. Regulatory authorities from time to time on the market spot checks, substandard products should be confiscated and a double punishment. By increasing the cost of illegal and ensure the healthy development of the industry.