Maru Optical is developing directly from molds with TR glasses as its main focus, and it has a coating factory, so various color works are possible based on this. The MA9~ series, the first product of the MARU brand, features colors that use all of the special pigments, laser imprints, and printing technologies, and is steadily selling in Korea as a unique metallic color. In addition, we are continuously exporting OEMs to Taiwan based on the fact that various color operations are possible.