The first generation of hot compress sea salt: The early hot compress sea salt was bought by the sick person in the vegetable market and used for pickles. This sea salt can generally be fried for three times because of its low mineral content, and the use time is about one and a half days, and it takes about 11 kilograms a month. Disadvantages are high corrosiveness, low mineral content, easy abortion due to fluorine and other heavy metals, and relatively complicated operation. It is necessary to add Zanthoxylum bungeanum, ginger and cinnamon to increase the absorption degree of meridians, and the added organic matter may cause the threat of secondary infection because it is easy to rot.
The second generation of hot compress sea salt: In order to prolong the service life, the bag salt field in Taiwan Province was developed in 1998 after four years of long-term research. Because it can be used for 1 to 15 days, it applied for a patent. This is the indigo salt sold by pharmacies, also known as halite, and of course there are many names. Drugstores are all 1 yuan Jin. The disadvantage is that Zanthoxylum bungeanum is still needed to promote the absorption of meridians.
the third generation of hot compress sea salt: it came out in 24, and it has the characteristics of high temperature, no melting, even muddy hair of effective minerals, the use time of sea salt special for pot frying can be extended to one month, and the use time of sea salt special for microwave oven can reach four to five years. Later, the popular "ice-fire physiotherapy pillow" and so on all belong to this type. The advantage is that compared with the second generation of sea salt, the gynecological treatment time is shortened to 2 years, and the previous sea salt takes about 3 years.
the fourth generation of hot compress sea salt: it was launched at the end of 28. After two years of clinical trials, its efficacy is 3 times that of the third generation sea salt, and it can be used repeatedly for four years, which shortens the time for treating gynecological diseases. It has the advantages of uniform drug release, no melting at high temperature, high mineral enrichment and so on. The disadvantage is that it can only be heated by microwave oven. There are relatively many varieties.