Collagen is the main structural protein in the extracellular space in the various connective tissues in animal bodies. As the main component of connective tissue, it is the most abundant protein in mammals, making up from 25% to 35% of the whole-body protein content. Collagen consists of amino acids wound together to form triple-helices to form of elongated fibrils. It is mostly found in fibrous tissues such as tendons, ligaments and skin. 

ITEM	SPECIFICATION	TEST METHOD
Appearance	white or off-white powder	Sensory test
Protein	≥90.0%	Kjeldahl method
Molecular Weight	≤1000da	GB/T 22729
PH (5% Aqueous Solution)	5.00-7.50	QB 2732-2005
Ash	≤2.0%	GB/T 5009.4
Loss on drying	≤8.0%	GB/T 5009.3
Pb	<0.5 PPM	GB 5009.12
As	<0.5 PPM	GB/T 5009.11
Hg	<0.5 PPM	GB/T 5009.17
Cr	<2.0 PPM	GB/T 5009.123
Total Plate Count	<1000cfu/g	GB/T 4789.2
Mold & Yeast	≤50 CFU/g	GB/T 4789.15
E.Coli	≤0.4 MPN/g	GB/T 4789.3
Salmonella	Negative	GB/T 4789.4

1. Contract the pore, tight to the skin, equilibrium PH value    
2. With natural moisturizing factor, keep skin moisture.    
3. Nourish hair; leave one's hair shining and spring.    
4. Prevent cartilage tissue aging, delay aging.