Purchase Qty. Reference FOB Price
100-499 Pieces US$1.50
500+ Pieces US$1.20
Product Description
Breathe exercising spirometer Using an three balls spirometer is important because it can help to: Open your airways and make it easier for you to breathe. Prevent a buildup of fluid and mucus in your lungs. Prevent a collapse of one or both your lungs. Prevent serious lung infections ...