Hainan Periwinkle Pharmaceutical Co.,Ltd is a High-tech driven professional API manufacturer, founded in 2005. Our factory is located in Wuzhishan City, Hainan Province, China, which has beautiful scenery and pleasant climate. We focus on Vinca alkaloids API, and have accumulated profound technology and personnel in plant extraction, chemical synthesis,amplification test. Our products have exported to Europe, South America, South Africa, Mexico, India and other countries and regions. API...