Chitin distribution (1) arthropod chitin prices mainly crustaceans, such as shrimp, crab, etc., contain chitin up to 58% to 85%; followed Insecta (such as locusts, butterflies, mosquitoes, flies, silkworm pupa shell chitin-containing 20% ??to 60%), Myriapoda (such as millipedes, centipedes, etc.), arachnids (such as spiders, scorpions, ticks, mites, chitin content of 4% to 22%); (2) molluscs including dual nerve classes (such as chitons), gastropods (such as abalone, snails), Tusk shell (eg angle shellfish), Lamellibranchia (such as oysters), cephalopods (such as squid, parrot) etc., chitin content of 3% to 26%; (3) including the original ring worm annelid classes (such as insect nest angle), hairy feet Gang (such as Nereis, earthworms) and Hirudinea (such as leeches) three bonds, Some contain chitin chitin little quality, while others are as high as 20% to 38%; chitin antitumor studies have found that the surface of tumor cells than normal cells, the surface of the brain has more negative charge. Resulting in cell surface charge imbalance, thus causing decreased adhesion between cells, tissue damage step. Polycations positively charged electrolyte can be adsorbed to the surface of tumor cells and a charge is neutralized, thus inhibiting the growth and metastasis of tumor cells. But chitin pictures, in addition to the tumor cell surface with a negative charge, the normal blood cells, especially red blood cells also have more surface negative charge. Therefore, a positively charged polyelectrolyte must have a selective tumor cells, in other words, only those on the surface of tumor cells and selective adsorption charge neutralization of a positively charged polyelectrolyte, in order to become characteristic antitumor agents. Chitin manufacturers | Marvell Biotechnology (certified) | chitin provided by Shouguang Maiwei biotechnology company. Shouguang Maiwei Biotechnology Limited (www.maiweishengwu.com) Shandong Weifang, a leader in bio-fertilizer, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Marvell biotechnology leader in the staff warmly welcome all inquiries negotiations to create Marvell biotechnology a better future.