Excellent plugin for import to WooCommerce CPT, with add-on plugin for Toolset.

If you’re building or maintaining a WooCommerce site, WP All Import with their WooCommerce add-on plugin is an excellent powerful and flexible solution for bulk import.
If you’re also using OnTheGo System’s Toolset suite for custom fields added to the Product custom post type, also get WP All Import’s add-on plugin for Toolset. If you’re using Toolset’s ‘Relationships’ feature between the Product CPT and other CPTs, it’s a ‘must have’ to get the job done.