Using the optimized low ash and low sulfur bituminous coal, advanced grinding and re molding briquetting process, it has high strength and excellent activity. Using strict steam activation process, it has high specific surface area and optimized pore size to adsorb color molecules and odor molecules in the solution.

It is used for the deep purification of direct drinking water to effectively remove residual chlorine and ensure the safety of drinking water. It has both filtering function and adsorption function.