Tianjin ZhongJian GuoKang Nano Technology Co., Ltd , which is a high-new technology enterprise with scientific research development production and sale . The company has collected senior experts, scientific researchers , professors from Academia Sinica and the country well-known research institution ,which devote themselves to the Nano high-end technique developing , development and application . The corporation produces chiefly : Tourmaline function materials , nanometer, far infrared, magnet therapy , bamboo charcoal Fiber Textile Products and Tourmaline healthy products .