Eco friendly laundry detergent e-commerce business seeks a manufacturer via a manufacturing agreement

UK based e-commerce business offering an eco-friendly laundry detergent on a subscription basis. They operate via D2C and wholesale. The product is an innovative zero-waste, all-natural alternative to mainstream detergents, formed into ultra-compressed sheets which dissolve in hot or cold water. It is 100% plastic-free, vegan, has a very low carbon footprint and is capable of being posted directly through a letterbox. They seek a manufacturer within Europe via a manufacturing agreement.