Sodium metabisulfite It can be used as the material of medicine, or used as curing agent of rubber; It also can be used as dechlorinating agent and scouring agent of textile; It also can be used in the process of leather Moreover, it can be used as the material of fine chemicals, or used as developer; In food industry, It can be used as bleaching agent, loosening agent, antisepsis bactericide and antioxygen antistaling agent.
	Anhydrous Sodium sulfite used in medicine, papermaking, tannage, leather, printing, dyeing, bleaching and food .
	Manganous Carbonate ( Industrial grade ) The material of ferrite for electrical equipment, Industrial Manganous Carbonate used as catalyst, pigment, drier, the material of manganous salts, or used in medicine, mechanical parts and phosphating process. It also can be used in the fertilizer as track element.