How to import the new sateliate SAR data to SNAP

The China Gaofen-3 SAR data had published, does anyone write something to convert the data to SNAP or any examples for import new data ?

If the data is not provided in a generic format like NetCDF-CF. a Reader needs to be implemented.
Brief guides are provided in our wiki:
SNAP Engine extension development - SNAP Wiki
Examples can be found in the source code repository senbox-org/snap-engine: ESA Earth Observation Toolbox and Java Development Platform (
or in the S1TBX repository for SAR examples: senbox-org/s1tbx: The Sentinel-1 Toolbox (

Is there any empty .dim file for strip slc data ?

Why should there be an empty .dim file?