Yes, The ports support the 1G SPF.
A 1GE/10GE/25GE SFP28 optical port sends and receives service data at 1 Gbit/s, 10 Gbit/s, or 25 Gbit/s.
When a 25GE optical module is connected to a port, the port can automatically adjust its rate to 25 Gbit/s.
When a 10GE optical module is connected to a port, the port can automatically adjust its rate to 10 Gbit/s.
Before installing a GE optical module on a port, run the port mode ge command to configure the port to work at 1
Gbit/s.

For details, see:
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100175712&id=EN-US_CONCEPT_0285048709&lang=en