How about using this as a differentiation item for your knee and leg care products? Negative ion and far-infrared functions can also be added through OEM. Japan's only personal health laser [With Laser 🄬] is now available with a dedicated supporter specialized for knees and legs, based on customer feedback. Many people over 50 years old have more problems with their knees and legs. Unless it is serious, hospitals may often tell you to build muscle. The best way to build muscle is to move your own legs. For that reason, With Laser for Knees and Legs is to make it easier to exercise while caring for your body with a laser. This product is based on the concept of "walking until you are 100 years old".