Is it permissible to benefit from the experience acquired while working in a private factory for the manufacturing and sale of the same secret product?

If the factory's raw materials and their mixtures are confidential, and the questioner became aware of them due to his work, then it is not permissible for him to exploit them except with the permission of the factory owners; because that falls under professional secrets that must be preserved for their owners. A professional secret is what the professional acquires as a result of practicing his profession, and the law prohibits its disclosure. It remains confidential even after its industrial application, such as mixtures of beverages and foods.