First Level：Original manufacturer & Distributor
Second Level：Qualified independence Distributor and Stock Distributor
Third Level: Qualify Broker
Forth Level: Open market supplier (New)

For the first-level supplier, they need to upload invoices and logistic documents for traceability purposes.

For the second level, basic inspections of label and package details are required, as well as the uploading of invoices and logistic documents for traceability purposes.

For the third level, basic inspections of label and package details are required, along with uploading invoices and logistic documents for traceability purposes. Furthermore, additional details must be inspected, including seal marks, dimension comparison with the datasheet, and other necessary testing.

For open market suppliers, basic inspections based on the third-level supplier must be applied.

For parts with doubts, they must be sent to a third-party lab for testing before delivery.