You are able to import products from Rectron with Stock Sync. Just choose on Rectron template after choosing to add new products to the store.
1. Go to Setup New Feed > Choose to Add new products to store.
2. Choose or search for the Rectron template.
3. Once created the template will direct to the feed details page because there is no file setting that is needed to fill up.
4. If you would like to do any changes in the field mapping section, then you can click Edit settings and go to the second step.
5. If there are no changes, you can proceed with the Start Process to import the products.
These are the available fields that can be imported for Rectron.