1. See if the product has a factory name, site, technical standards and product certificate or quality assurance certificate.

2. Attention should be paid to the use of "hydroelectric separation heating" and "pneumatic pressure control technology, i.e. explosion-proof device" in the instruction.

3. Electric heating treasure is most afraid of water leakage and electricity leakage. Before electrifying electric heating treasure, it is necessary to make sure that the socket is dry.

4. When charging, first insert the plug into the outlet of the water storage electric heating treasure, and then connect the power supply. It should be more than 2 meters away from people. Do not charge the electric heating treasure in your arms in order to prevent electric shock.

5. When the bag body swells slightly, cut off the power supply first and then pull out the plug on the bag.

6. In the charging process, if the bag body swells obviously, indicating that there is surplus air in the bag body, the power supply should be cut off first, then the plug of the bag body should be pulled out, the exhaust plug at the water injection port should be removed, and the air in the bag should be exhausted.

7. Needling and heavy pressure are strictly prohibited in order to prevent leakage of liquid and leakage of electricity.