English 
PVC hot water bag:
The price is cheaper than the rubber, the strength is lower than the rubber, but the heat preservation effect is good.
Silicone hot water bottle: the chemical property is stable and non-flammable. It can be heated in the microwave or used as a cold water bottle in the refrigerator.
Water injection type hot water bag, each use, hot water will accelerate the aging of the bag body, aging, hot water bag will appear the risk of rupture.
Some other functions of the hot water bottle.
1. Promote the healing of the wound hot water bag filled with warm water on the hand warm compress, only feel the heat flat quite comfortably, continuous apply for a few days until the wound fully healed. Soothe the pain. Knee pain. Put a hot water bottle on your knee and apply a warm compress. The pain will soon be relieved. Hot compress can not only relieve the pain of guanshu, but also lower back pain, Sciatica, and dysmenorrhea (all of which belong to cold syndrome).
2. Place a hot water bottle on the spot of local pain for 20 minutes at a time, once or twice a day, also obviously relieves pain back to cancer: sprain, contusion caused by subcutaneous hematoma, dry injury 24 hours later, hot water bag, can promote the absorption of subcutaneous congestion.
3. Apply back cough, cold winter by cold cough, hot water bag filled with hot water, wrapped with a thin towel, and dry the back to dispel the cold, can quickly stop the cough, and a hot back, can make the upper respiratory tract, trachea, lungs and other parts of the vasodilatation and blood circulation accelerated to enhance metabolism and phagocytosis of white blood cells, and cough. This method is especially effective for colds and coughs that appear early on.
