关于发热包的持续发热时间，我们能进一步分析：1.发热包发热所持续的时间

About duration of heat heating package, we can further analysis: <br><br>1. heat pack heat the duration, size and body temperature when used with its related. <br>I.e., the larger body size, the longer the duration of heating time; the higher the temperature in use, the longer the duration of fever. <br>We propose to increase the size of the heat pack to increase the duration of fever. <br><br>2 may additionally increase muscle a bag (bag size can be produced according to the product) similar to that shown in the drawings, in use, heat bag in the bag, this can also increase the duration of heat generation. <br>3. In addition, the attachment is a test duration of temperature when a heat pack heat we have done before, for your reference.

With regard to the duration of the heating pack, we can further analyze:<br><br>1. The duration of the fever package fever is related to the ambient temperature and the size of the body at the time of use.<br>That is, the larger the body size, the longer the heat lasts, and the higher the ambient temperature in use, the longer the duration of the heat.<br>We recommend increasing the size of the heating pack to increase the duration of the heat.<br><br>2. You can also add extra muscle to a cloth bag similar to the one shown in the drawing (the cloth bag can be made according to the size of the product), when using the hot bag into the cloth bag, which can also increase the duration of the heat.<br>3. In addition, the attachment is a test of the temperature duration of a heat pack when we have done before, for your reference.

We can further analyze the continuous heating time of the heating package:<br>1. The duration of the heating of the heating package is related to the ambient temperature when it is used and the size of the body.<br>That is to say, the larger the body size, the longer the heating duration; the higher the ambient temperature in use, the longer the heating duration.<br>We suggest increasing the size of the heating package to increase the duration of heating.<br>2. A cloth bag similar to the one shown in the attached figure can also be added (the cloth bag can be made according to the product size). When using, put the heating bag into the cloth bag, so as to increase the duration of the heating.<br>3. In addition, the attachment is a test that we have done before for the duration of temperature when the heating package is heated, for your reference.