THE SMOKE IS THICK AND WHITE,NON-TOXIC,EFFICIENT AND ENERGY-SAVING,AND THE QUALITY IS GUARANTEED. ANTI-SLIP HANDLE DESIGN EXQUISITE LINES,STURDY AND DURABLE ANTI-SLIP DESIGN REINFORCED BOTTLE CAP THE BOTTLE CAP IS DESIGNED WITH AN ANTI-BACK FLOW DEVICE TO EFFECTIVELY ENSURE SAFE OPERATION FOR A LONG TIME.