1, meaning different, independent extraction means that the payer chooses the payment grade and payment period independently, which is not fixed. The extraction of approved serial number refers to the identification of individual declaration and approval forms of medical insurance premiums in various places, and the fixed payment is made with tax collection number.

2, the nature is different, and the independent extraction is random and can be extracted at any time. The extraction of the approval serial number is fixed and must be carried out at a fixed time.