The so-called "grey customs clearance" refers to the customs clearance of some Russian import agent business owners. Through cooperation with customs officials, R every non-public agreement helps to eliminate the behavior that the import level of goods is lower than the legal tax rate of the Russian market by means of understatement of value, understatement of weight and false name. Because the behavior is very transparent, it is called "grey customs clearance". Customs agents handle import business and provide transportation and customs clearance procedures for shippers, and their fees are far lower than normal flower customs clearance fees. This is because before the customs declaration, the customs declaration company secretly deals with customs officials, who promise to the customs that the weight, quantity, amount and name of the goods reported are true, and the customs can accept the promise of the customs declaration company on the pretext that the customs does not inspect the goods in large quantities, and use the false customs declaration form to evaluate the customs duties according to the value. Therefore, the calculated customs duties are far below the payable amount, which can save a lot of customs clearance fees. However, in the "gray customs clearance" method, because the customs clearance reached a gray agreement with the customs and tax authorities, the owners could not obtain the Russian declaration at all. Once the relevant Russian departments conducted inspections, these goods would be suspected of smuggling and confiscated according to law, causing huge losses to China businessmen.