COMWIN is specialized in producing new types of light source materials and special lamps. COMWIN holds two main product lines: one is amalgam and auxiliary amalgam (Indium mesh) series which is used in the low pressure vapor discharge lamps; another is water-coating materials associated with the indicating materials, including hydrophilic nanometer alumina, POLYOX, dispersing agent, NPE, indicating powder used in baking the tube. The amalgam developed and manufactured by COMWIN holds own patents and owns a favorable reception from the China Association of Lighting Industries and the customers; the sales of water-coating materials which used in low-pressure vapor discharge lamps holds most of the domestic market share.