● Sulfuric acid, hydrogen peroxide, alcohol filter
● Filtration of sulfuric acid, phosphoric acid, methanol, ethanol and acetone
● Non iron aluminium sulfate, chloroform, chlorine ammonia, chlorine filtration
● Salt crystal and two salt water desalination and lye filter
● Lithopone production of barium sulfate and barium sulfide filter
● Chromium hydroxide and barium chromate filter
● Acid bath and sulfur filter in the production of chemical fiber