BẠC ĐẠN-VÒNG BI-6307-6300-6301-6302-6303-6304-6305-6306-6308-6309-6310-6311-6312-6313-6314-6315-6316-6317-6318-6319-6320-6321-6322-6323-6324-6325-6326-6327-6328-6329-6330-Z-ZZ-.2ZR-2Z-C3-C4-NTN