七水硫酸镁（硫苦、苦盐、泻利盐、泻盐）

　　本品为细小的针状或斜柱性结晶。无臭、味苦、在干燥空气中易风化。
　　用于印染细薄的棉布，作棉丝的加重剂，木制品的填料，还用于制革、肥料、瓷器、染料、火柴、炸药和防火材料的制造等。在医药用作泻盐。近年来在肥料方面用量最为突出。

一水硫酸镁（镁肥）

　　本品为粉状或颗粒状，无臭、味苦。主要用于作肥料增加土壤的中微量元素。

  molecular formula .molecular weight
  The product looks like the cystal as fine needle shape.No foul smell bitter taste.It is easy to be decency in dry weather.
  It is used for dying fine-woven cotton cloth for weight-adding agency.The product is also used for leather-making,manure ,hardware,textile,matches,explosives and fire-proof materials.
  In medical circle it is used as Epsom salts.In recent years it is widely used in manure.

Magnesium sulfate(H₂O)

  Molecular formular       Molecular weight
  The product is powder shape or pellet shape.No offensive oder,bitter taste.It is mainly used as mineral elements for manure in soil.