[company_age]5.0[/company_age][employees]2-10 employees[/employees][funding]Series unknown[/funding][description]Retein is a Swedish company founded in 2019 that develops and commercializes a patented molecular separation technology inspired by nature. This technology enables the precise and sustainable recovery of valuable resources, including clean water, lithium, and nutrients, from any accessible water source. Retein's mission is to accelerate the transition towards a material-optimized world by providing convenient access to sustainably sourced high-quality materials. The company's technology is based on the use of channel proteins, which are found in cell membranes and are responsible for the selective transport of molecules. Retein has stabilized these proteins to enable their use in technical applications. The company's technology has the potential to address the growing scarcity of valuable materials and clean water, while also reducing the environmental impact of resource extraction and processing. Retein is currently focused on solving problems for the healthcare, battery production and recycling, and water treatment and purification industries. The company is headquartered in Gothenburg, Sweden.[/description][ps]Patented molecular separation technology for resource recovery from water.[/ps]