Macmellen is a scientific and technological enterprise focused on the development and production of novel toys, based in beijing, china. Over the past 10 years, macmellan has worked to build a new ecosystem of smart toys that ranks ahead and has achieved a number of important advances and results. In 2016, macmellen introduced the mix-coupler project and is responsible for promoting its development in china. Macmillen has authorized several proprietary technologies for mix-cupler and, for this project, china has authorized the general agent。