Generally, finished products will choose to apply for DID(QDL), which is the so-called BQB column name, but only if the original module has applied for BQB certification, and using the QID number of the original module is to apply for a new ID number, which is DID.
Q: What form of BQB certification should I apply for?
A: First of all, please confirm whether the Bluetooth module of your Bluetooth product has obtained BQB certification before:
1. If you do, you only need to apply for the column name of DID(QDL).
2. If you haven't done it yet, you must do a BQB(QDII) certification of Bluetooth module before you can apply for the listing of DID.