*FDA PBT Bamboo Charcoal Toothbrush *Far infrared heating effect *Slide free Rubber handle *ISO9001 manufacturer on OEM&OBM Bamboo Charcoal Toothbrush / Charcoal Toothbrush / Bamboo charcoal bristle toothbrush Material: PBT + PP + PTE 1) drying, absorbing sweat, getting rid of damp 2) far infrared heating effect. 3) produce the anion to keep fresh air. The surface of bamboo charcoal is porous. ...