Food glue 
 ① food from animal bone glue is a connective tissue or skin from partial hydrolysis of collagen protein. It has many excellent physical and chemical properties, such as the formation of reversible gels, bonding, surface activity, etc. 

 ② Bone Glue is amber, translucent, the fish eye-like particles, with high cold strength and low viscosity characteristics. Glue indicators: Project Glue Gel strength (12% of goods by water gel 6.67%) Bloomg ≥ 160 Blaine viscosity (12% of goods by water gel 6.67%): ≥ 4.5 a viscosity (at 12% moisture rubber goods 15%) ° E ≥ 3.4 Moisture ≤ 16 Ash% ≤ 3 Water insoluble% ≤ 0.5 PH value of 5.5-7.0.