... . Ammonium Chloride Our main market is Japan, NewZealand, Korea, USA and Australia, Singapore, ect. Especially in New Zealand, this product sells ... very well. Because in New Zealand it rains a lot, magnesium oxide can release a large number of ... , which can adjust the soil PH value, prevent soil acidification and harden. Compared with magnesium sulfate, magnesium oxide is not water ...