ELSA BIOTECHNOLOGY CO., LTD.boasts professional research, sales and service teams, engaged in providing customers with high-quality medical intermediates, API and bulk stock chemicals. Moreover, medical intermediates include chirality and heterocyclic series.First-class custom synthesis service has become one of our features. We have gotten wide trust and strong support from our customers, old and new, because of our superior-quality products, easy and convenient proceedings, improved orders tra...