There are three models Laser comb in our company, and all of this has CE and ROSH approved. The model MK-807 is combined by two comb MK- 807A (laser and infrared)-- Laser / Infrared stimulating hair root to help hair growing. And MK-807B(massager)--Impulse Function massage the head skin, adjust the brain blood system. Nutrition liquid help the hair growing. 20pcs / carton Carton size: l55 x w51 x h38.8 cm Colour box size: L27 x w26 x h6 cm.