Congratulations on a successful sauce! I agree with Ian you should look at the Food Bowl to potentially scale your production. You could also look at contract manufacturing your product. There are lots of great facilities in NZ that do this and as your product is shelf stable it is relatively easily for you to do in job lots. I would contact McFoodies who can put you in touch with a number of companies and they can also help through the process. I might also be able to help you please email me at maree.glading@gmail.com with more details.
Good Luck!