Biological Products

      • Collagen Peptides

      Collagen Peptides

      Collagen peptides is small bioactive peptides obtained by enzymatically hydrolysis of collagen,it has a molecular weight of less than 5000Da. Collagen peptides is cold...

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      • Chitosan Oligosaccharide

      Chitosan Oligosaccharide

      Chitosan Oligosaccharide,which is low molecular-weight chitosan,is made from chitosan that origin from crad shells by enzyme hydrolysis.It degress of polmerization is 2~20,average...

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      • Chitosan

      Chitosan

      Chitosan is chitin as raw material, after refining, insoluble in water, soluble in dilute acid, can be absorbed by human body.It is White/Off-white, innocuous, flavorless, pearly...

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      • Chitosan Products

      Chitosan Products

      Chitosan Our products have nice appearance and excellent quality.It is the optimal choice for medicine,health care products,food and beverage etc. In medicine and healthcare...

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      • (C6H11NO4)N

      (C6H11NO4)N

      Qingdao Longyuntong Corporation has set up 3 factories in Shandong, Tai'an and Weifang to guarantee the supply of our products.Chitosan((C 6 H 11 NO 4 )n) This products have nice...

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      • Chitosan

      Chitosan

      Chitosan Our products have nice appearance and excellent quality.It is the optimal choice for medicine,health care products,food and beverage etc. In medicine and healthcare...

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      • Buy Chitosan Oligosaccharide

      Buy Chitosan Oligosaccharide

      Chito-oligosaccharide Appearance: Yellow and light brown Odor: Sightly smell as acetic acid Molecular weight: less than 1500,less than 3000,less than5000 Degree of polymerization...

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      • Chito-oligosaccharide

      Chito-oligosaccharide

      Chito-oligosaccharide Appearance: Yellow and light brown Odor: Sightly smell as acetic acid Molecular weight: less than 1500,less than 3000,less than5000 Degree of polymerization...

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      • Chitosan Oligosaccharide

      Chitosan Oligosaccharide

      Chitosan Oligosaccharide Appearance: Yellow and light brown Odor: Sightly smell as acetic acid Molecular weight: less than 1500,less than 3000,less than5000 Degree of polymerization...

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