If you want to make your own brand of essential oil, you need to provide your own business license and trademark (category III). If there is no trademark, the factory can also help you register. Other factories can do all the work, including testing reports and filing, production, materials and raw materials. The factory can do all the work, and the quality can be experienced first. If there is a quality agreement in the contract, you can go to the factory for on-the-spot investigation when you have time, so that you can know the strength and qualification for reference only.