Zannan Pharma Ltd We are a custom synthesis and chemical R&D manufacturing company based in Shanghai, China. Our R&D team is formed by >50% Ph.D. is and masters from top-tier institutions in China and led by experienced scientists who obtained Ph.D. from top American universities and worked in international pharmais for many years in drug discovery, process development, catalysis, and RCM / ROMP technology. The copmany has State-of-the-Art facilities for scientists to work on total synthesis and chemical R&D projects effectively, and the company strictly executes the regulations of IP protection for our customers. Currently, the company provides the following major products and technology services: (1) Zhan (Ru) Catalysts highly Active for Metathesis Reactions (2) High-quality building blocks and API intermediates (3) Custom synthesis, FTE research and process R&D services (4) Custom Contract Manufacturing in China.