Thanks for your prompt reply.

The CRA asks me for this: "the complete sales listing information with sales invoice numbers and name of clients as per name shown on issued sales invoices, and export documentation by the deadline outlined in our letter."

So I have no idea what "export documentation" mean, since the shipments are all under $2000 CAD for each of them, they are not required to be custom declared when exported out of Canada, the third party courier only provides me the waybills for each shipment. I am sure the courier did ship the packages to my customers in China as they all received their packages.

I can only provide the waybills and tracking info for the shipments, will this be sufficient?