continue on to further improve, to make sure product top quality in line with market and consumer standard requirements. Our firm has a excellent assurance program have already been established for CAS 500-22-1, Amino Acids, C5H10N2O, 172.612,N-(4-Aminobenzoyl)-L-glutamic acid. We sincerely hope to establish some satisfactory relationships with you in the near future. We will keep you informed of our progress and look forward to building steady business relations with you. The product will supply to all over the world, such as Europe, America, Australia,Guatemala, Chile,America, UK.The quality of our merchandise is equal to OEM's quality, because our core parts are the same with OEM supplier. The above items have passed professional certification, and we not only can produce OEM-standard items but we also accept Customized Merchandise order.