man-made stone has the following advantages 1. Effective Sterilization and Inhibit Bacteria 2.Purify the Air and Dissolve Harmful Substances 3. Remove Peculiar Smell 4. Respirable and Control Humidity 5. Heat Preservation and Reduce Noise 6. Sound Insulation and Reduction of Noise 7. Fireproofing and Inflaming Retarding 8 Produce Anion 9. Produce the Infrared Ray 10. Effect of Electrostatic Prevention