HUAWEI-MPLS-EXTEND-MIB extends the attributes of the MPLS TE. Thus, the NMS can query the TE extended attributes on the device.
The OID of the root object is:
iso(1).org(3).dod(6).internet(1).private(4).enterprises(1).huawei(2011).huaweiMgmt(5).hwDatacomm(25).hwMplsExtendMib(121)