Magnesium is the center element of chlorophyll,photosynthes can't go on without it. It is the activating agent of many enzymes,such as it can promote the

metabolism of carohydrates,nucleic acid synthesis,the conversion of phosphate,etc.

1.hydrated solubility in water  for agriculture
Sulfur and magnesium can provide rich nutrients for crops that it contributes to crop growth and increase the output, it also helps to loosen the soil and improve soil quality.
The symptoms of lacking of "sulfur"and"magnesium":
1) It lead to exhaustion and death if it's serious lacked;
2) The leaves became smaller and its edge will became dry shrinkage.
3) Susceptible to bacterial infections in premature defoliation

2.hydrated solubility in water  used in the industrial
It can be used in printing and dyeing, Industry,monosodium glutamate and yeast fermentation and as accessory ingredient for ABS and PVC resin

3.hydrated solubility in water  for stock raising
Magnesium is usually Fertilization among the early spring and the end of the year, until the grass can provide adequate magnesium ,it can also added in the feed and drinking water to

meet growing demand of dairy cow's sebum, in order to improve the quality and quantity of milk cows.

4.hydrated solubility in water  which contains a small amount of crystal water or non-crystalline water can be used for organic synthesis and the desiccant and dehydration agent of feed and fertilizer.