Bear "Customer 1st, Good quality first" in mind, we work closely with our prospects and supply them with efficient and professional services for chemical formula: C8H7NO3, 99% Monosodium Glutamate , Sodium Fluorosilicate Detergent , Octadearyl dimethyl ammonium chloride ,CAS NO 6834-92-0 . All products are manufactured with advanced equipment and strict QC procedures in order to ensure high quality. Welcome customers new and old to contact us for business cooperation. The product will supply to all over the world, such as Europe, America, Australia,Rotterdam , Miami ,Iraq , Eindhoven .We set a strict quality control system. We have return and exchange policy, and you can exchange within 7 days after receive the wigs if it is in new station and we service repairing free for our products. Please feel free to contact us for further information if you have any questions. We are glad to work for every client.