JLT-MD500B Semiconductor laser therapy machine is developed by our company with a five wavelength composite light .Laser tissue penetration depth of 7cm. and have multiple effects .No trauma, painless, safe and reliable .The output power is high and the treatment time is short .Adapting with GaAlAs leakage free laser .and have long service life .The effect of semiconductor laser therapeutic apparatus is very significant in clinical application .It has created a new field of Laser Clinic and become a new type of medical laser instrument with great development potential .