NEW CENTURY (HONG KONG) CO., LIMITED
It is a part of our daily routine to brush our teeth; we all brush our teeth once or twice a day. However, not many people know exactly the actual effects and efficiency of our brushing methods, or check whether toothbrushes and toothpaste used can really achieve the aim of cleaning our oral cavities. Because of this, more than 80% of the world's people suffer from some degree of periodontal disease.