The major production and export from New Caledonia is nickel, which is predominantly shipped as ore in huge volumes to Japan and Europe for processing.
Exports to Australia are very minimal, but because of mining, there is some machinery that is exported from New Caledonia to Australia for refurbishment or parts.
New Caledonia is a GAS (Giant African Snail) country, and any import from New Caledonia is subject to very stringent DAFF (Quarantine) checks.
Despite the nearness of New Caledonia, freight rates for air, courier, or seafreight are very expensive.
Port charges in Noumea are government controlled for both import and export, and are in addition to any freight rates quoted and are relatively expensive.