Longwave Therapy – Long Wave Diathermy uses an electric current to produce heat deep inside a targeted tissue. It can reach areas as deep as two inches from the skin’s surface. We provide you with the best product quality and great on time delivery of the products. Our range for long wave therapy include: Delta Longwave Diathermy, Longwave Diathermy Shortwave Deep Heat Pain Relief Chiropractic HGH04HGTJH, and Spot cure: Longwave Diathermy Machine Device.