With the arrival of summer, more and more people are paying attention to their skin, especially female friends. Due to excessive sweating and strong oil secretion in summer, combined with strong ul...
Glycyrrhizic acid ammonium salt, white needle crystal or crystalline powder, has a strong sweetness, 50 to 100 times as sweet as sucrose. Melting point 208~212℃. Soluble in ammonia, insoluble in gl...
What is polycaprolactone?
Polycaprolactone, abbreviated as PCL, is a semi crystalline polymer and a completely degradable material. Polycaprolactone can be classified into pharmaceutical grade and ...
In the past, due to the backward medical knowledge and limited conditions, people had little awareness of tooth protection, and many people did not understand why teeth should be protected. Teeth a...
October 1st, quietly came, the birthday of the motherland is about to start! Bless the great motherland, happy birthday and happy holidays!
1949-2022 Warmly celebrate the 73rd anniversary of the fo...
Polyethylenimine(PEI) is a water-soluble polymer. The concentration in water of commercial products is usually 20% to 50%. PEI is polymerized from ethylene imide monomer. It is a cationic polymer t...